Where possible, use the substitution x = u to solve the following equations: a. x 4
Question:
Where possible, use the substitution x = u² to solve the following equations:
a. x − 4 √x = −4
b. x + 2 √x = 8
c. x − 2 √x = 15
d. x + 6 √x = −5
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a Let u x then x u and x 4x u 4u 4 so u 4u 4 0 u2 0 ...View the full answer
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Related Book For 
Cambridge IGCSE And O Level Additional Mathematics
ISBN: 9781510421646
1st Edition
Authors: Val Hanrahan, Jeanette Powell
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