Solve each of these quadratic equations. Give your answers as exact answers. a) x 4 4x
Question:
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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answer a Lets substitute a variable to make things easier Let z x Then we have the equation z 4z 21 ...View the full answer
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Related Book For
Complete Pure Mathematics 1 For Cambridge International AS & A Level
ISBN: 9780198427438
2nd Edition
Authors: Jean Linsky, Brian Western, James Nicholson
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