exam
Maths Puzzle
Numerical Ability
For f(x) = 1/x^2 -2x -8, find the interval(s) where f(x) < 0.
possible answers:
(-4,2)
(-2,4)
(2,4)
(2,8)
Pleeze show me. Thank you.
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exam Other Question
kanchan receives a certain amount of money on her retirement from her employer she give half of this money & an additional sum of Rs.10000/- to her daughter. she also gives one thi
Add and simplify:
1/x-2 - 4/x^2 + 3/x+2
Multiply and simplify:
x^2-6x+8/3x+9 multiplied by x+3/x^2-4
Divide and simplify:
y2+7y +10/2y-4 divided by y^2-3y-10/y-2