Question

factorise 12(4a-1/4a)^2+5(4a-1/4a)-2

Answer 1

Answer:

let 4a-1/4a=x

then above equation

12x^2+5x-2

=12x^2+8x-3x-2

=4x(3x+2)-1(3x+2)

=(4x-1)(3x+2)

now putting the value of x for finding a

4a-1/4a=1/4 and 4a-1/4a=-2/3