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Antwoorden
VMBO4 Hoofdstuk 8 Algebra voor HAVO en MTO |
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K1 Zonder haakjes schrijven
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Kern 2 Ontbinden
in factoren |
K3 Kwadr. vergelijkingen |
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1 a - B b - D c - C d - A 2 14c – 21c2 3 a 12p + 96 b -12q + 66 c -2r2 + 5r d -35s + 15s2 e x2 – 3x f 4z2 – 4z g -3a – 1 h -a – 3 i -2x + 5 4 a a2 + ab + ac b -6a + 18a2 – 15ab c 2b3 – 10b2 + 6b d 12x2 - 12xy + 12x e 6y2 – 21y3 + 6y4 f 6x2 – 4xy + 2xz 5 a 6a + 6b b x + 12y c 5p + 15 d 3p + 4 6 a2 + 8a + 15 7 a x2 + 9x + 8 b y2 + 16y + 63 c x2 – 5x + 6 d y2 – 7y – 30 e s2 + 2s – 15 f t2 – 11t + 30 g s2 – 36 h t2 – 49 8 a 6a2 – a – 1 b -4a2 + 45a – 50 c 3b2 – 13b + 14 d -16b2 + 60b + 16 e 16c2 – 1 f -4c2 + 9 g 9d2 – 1 h 49d2 – 16 9 a2 + 6a + 9 10 a x2 + 8x + 16 b x2 + 10x + 25 c x2 + 12x + 36 d 9x2 + 6x + 1 e y2 – 10y + 25 f y2 - 16y + 64 g 4y2 – 12y + 9 h y2 – 12y + 36 |
11 a 2 b y c 6(y + 2) 12 a 12(p – 3) b x(x + 6) c 5y(y – 4) d -4(m – 3) 13 a 8(x + 2) b 18(4a – 1) c -15(2a – 3) d 2p(2p + 1) e p(p – 8) f -5w(2w – 3) 14 a 16(3d + 2) b 6(5p – 7q) c -p(p – 6) d 3a(3a – 4) e -8(3q – 7r + 4s) f -3(6x + 9y – 7z) g 4(3x2 – 2x + 6) h -15(2a2 – 3a + 4) 15 a 8x b 5 en 3 c (x + 5)(x+3) 16 a (a + 3)(a + 4) b (a + 2)(a + 5) c (a + 1)(a + 6) d (a + 3)(a + 7) e (p + 5)(p + 10) f (p + 9)(p + 6) g (p + 9)(p + 1) h (p + 1)(p + 1) 17 a (x – 3)(x – 4) b (x – 7)(x – 3) c (x – 3)(x – 8) d (x – 2)(x – 4) e (y + 4)(y + 7) f (y – 4)(y – 7) g (y + 4)(y + 5) h (y – 4)(y – 5) 18 a nee b nee (min maal min is plus) c 7 en -3 19 a (x + 7)(x – 2) b (a + 8)(a – 5) c (z + 3)(z – 2) d (k + 6)(k – 1) e (y – 12)(y + 7) f (x – 10)(x + 3) g (a– 11)(a + 1) h (m – 6)(m + 5) 20 a (x + 4)(x – 3) b (y – 4)(y + 2) c (z – 12)(z + 5) d (v – 24)(v + 4) e (a + 11)(a – 2) f (b + 16)(b – 6) g (c – 9)(c + 4) h (d – 7)(d + 6) 21 a (x + 2)(x + 7) b (y – 10)(y + 1) c (z – 3)(z – 6) d (v + 11)(v – 2) e (a – 6)(a + 4) f (b + 6)(b + 6) g (c + 8)(c – 2) h (d – 3)(d – 3) 22 (x + 5)(x – 5) 23 a (y + 3)(y – 3) b (p + 4)(p – 4) c (t + 10)(t – 10) d (s + 1)(s – 1) e (x + 2)(x – 2) f (v + 8)(v – 8) |
24 a y = 28 b x = 0 of x =3 c x = -6 of x = 2 25 a a = 0 of a = -3 b a = 0 of a = 3 c a = 0 of a = -5 d p = 0 of p = 3 e p = 0 of p = 4 f p = 0 of p = -1 26 a nee b ja c x = -3 of x = 7 27 a juist b onjuist; x = -2 of x = -4 c onjuist; x= 0 of x = -9 28 a x = -10 of x = -4 b x = 3 of x = 8 c x = 2 of x = -7 d x = -4 of x = 9 e t = 2 of t = -6 f t = 2 of t = -8 g t = -4 h t = 3 of t = -2 29 a t = 0 of t = 5 b 0 en 5 c tsja 30 a a = 0 of a = 5 b a = 0 of a = -7 c a = 0 of a = 1 d a = -2 of a = -3 e a = 1 of a = -9 f a = 7 of a = -4 31 a x = 0 of x = -15 b x = -2 of x = -10 c x = 5 of x = 11 d x = 5 of x = -10 e x = 0 of x = 9 f x = -3 of x = 4 32 a x = 0 of x = 2 b x = 0 of x = 1 c x = 0 of x = ½ d x = 0 of x = 16 e x = 2 of x = -6 f x = 2 of x = -8 g x = -4 h x = 2 of x = -3 33 a p = 5 of p = -3 b p = -1 of p = -5 c a = 8 of a = -4 d a = 6 34 a x2 – 2 = x b x = -1 of x = 2 c A(-1 , -1) en B(2 , 2) 35 a A(2 , -3) en B(-2 , 5) bcd Dalparabool snijdt dalende rechte in A en B 36 a A(-3 , -12) en B(4 , 16) b A(4 , -4) en B(6 , -16) c geen oplossingen |
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Kern 4 De abc-formule |
Kern 5 Ongelijkheden |
Herhaling |
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37 a D = 4 x1 = -1 x2 = 1/3 b D = 9 x1 = 1 x2 = 2 ½ 38 a D = 25 x1 = 2 x2 = - ½ b D = 64 x1 = -1 x2 = 0,6 39 a a = 1 b = 5 c = 6 b D = 1 x1 = -2 x2 = -3 40 a D = 9 x1 = 1 x2 = 4 b D =16 x1 = -1 x2 = -5 41 a (x – 1)(x – 4) =0 etc. b (x + 1)(x + 5) = 0 etc. 42 a OK b x1 ≈ 0,28 x2 ≈ 1,78 43 a D = 37 x1 ≈ -2,18 x2 ≈ -0,15 b D = 33 x1 ≈ -4,37 x2 ≈ 1,37 c D = 29 x1 ≈ -0,19 x2 ≈ 5,19 d D = 0 x1 = x2 = -2 44 a 3x2 +x -2 = 0 b D = 25 x1 = -1 x2 = 2/3 45 a D = 29 x1 ≈ -5,19 x2 ≈ 0,19 b D = 28 x1 ≈ -1,65 x2 ≈ 3,65 c D = 32 x1 ≈ -1,83 x2 ≈ 3,83 d D = 12 x1 ≈ -3,73 x2 ≈ -0,27 46 a x = 1 of x = -3 b D = 4 x1 = -2½ x2 = -1½ 47 a dalparabool b stijgende rechte c x1 ≈ 1,27 x2 ≈ 4,73 48 x1 = -3 x2 = 2 49 Top(2 , -7) 50 a Top(-2, -18) b Top(3 , -8) c Top(-2 , 12) d Top(3 , 2½) 51 a Top(2 , -4) bc Dalparabool 52 Top(3 , 4) Bergparabool |
53 a 2 ½ uur b tot t = 2½ c vanaf t = 2½ 54 a x = 2½ c x > 2½ 55 a x < 1½ b x > - 11/3 c x > 22/3 56 a doen b x = 22/3 c x < 22/3 d x > 22/3 57 x > 2/3 58 a x1 = -1 x2 = 3 c x < -1 of x > 3 59 a A(-1 , 3) B(2 , -3) b -1 < x < 2 (tussen -1 en 2) 60 a t ≈ 1,07 sec. b ≈ 1,34 sec. |
Van de herhaling geen antwoorden. Zelf doen. |