Question on: JAMB Mathematics - 1991
Evaluate x2(x2 - 1)-(\frac{1}{2}) - (x2 - 1)(\frac{1}{2})
A
(x2 - 1)-\(\frac{1}{2}\)
B
(x2 - 1)1
C
(x2 - 1)
D
(x2 - 1)-1
Ask EduPadi AI for a detailed answer
Correct Option: A
x2(x2 - 1)-(\frac{1}{2}) - (x2 - 1)(\frac{1}{2}) = (\frac{x^2}{(x^2 - 1)^\frac{1}{2}}) - (\frac{(x^2 - 1)^\frac{1}{2}}{1})
= (\frac{x^2 - (x^2 - 1)}{(x^2 - 1) ^\frac{1}{2}})
= (\frac{x^2 - x^2 + 1}{(x^2 - 1)^\frac{1}{2}})
= (x2 - 1)-(\frac{1}{2})
Add your answer
Please share this, thanks!
No responses