Question

4x2-4x-15=0 quadratic equation by factorisation​

Answer 1

4x²-4x-15=0

4x²+6x-10x-15=0. (as 15x4=60 so, 10x6=60)

2x(2x+3)-5(2x+3) =0

(2x-5)(2x+3)=0

so, 2x-5=0

2x=5

x=5/2

also, 2x+3=0

2x= -3

x= -3/2

hope it's help you✌️

Answer 2

given quadratic equation is solved... hope it helps