The expression 4x - 5x^2 +1 is positive then x lies in ?
Please help!!!
Answers
Answered by
15
Answer:
Step-by-step explanation:
4x-5x^2+1 is positive
Therefore 5x^2-4x-1 is negative
5x^2-5x+x-1
5x(x-1)+1(x-1)
(5x+1)(x-1) =0 is negative
X=1, -1/5
X is not equal to 1 becoz it is positive
Therefore X=-1/5
Similar questions