Solve each of these quadratic equations Give your answers as exact answers a) x 4 4x 21 0 b) 6x 4 x 2 c) x 6 7x 10 0 d) 4 11x 3x 4 0 e) 6x 8 6 13x 4 f) x 6 3x 40 ...

answer a Lets substitute a variable to make things easier Let z x Then we have the equation z 4z 21 ...

Solve each of these quadratic equations. Give your answers as exact answers. a) x 4 4x

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Solve each of these quadratic equations. Give your answers as exact answers.

a) x⁴ – 4x² – 21 = 0

b) 6x⁴ – x² = 2

c) x⁶ + 7x³ + 10 = 0

d) 4 + 11x² – 3x⁴ = 0

e) 6x⁸ + 6 = 13x⁴

f)
x⁶ + 3x³ = 40

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Complete Pure Mathematics 1 For Cambridge International AS & A Level

ISBN: 9780198427438

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Authors: Jean Linsky, Brian Western, James Nicholson

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Question Posted: Apr 11, 2023 11:29 AM

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Solve each of these quadratic equations. Give your answers as exact answers. a) x 4 4x

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Complete Pure Mathematics 1 For Cambridge International AS & A Level

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