Question

4x²+4x+15=0 solve by middle term factorising. ​

Answer 1

Answer:

4x²+10x-6x+15=0

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

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

x=5/2

or

x=3/2

Answer 2

Correct Question:

$\sf 4x² + 4x - 15$

Answer:

$\sf4 {x}^{2} + 4x - 15 \\ \sf4 {x}^{2} + 10x - 6x -15 \\ \sf2x(2x + 5) - 3(2x + 5) \\ \sf(2x - 3)(2x + 5) \\ \sf x = \frac{3}{2} \: \: \: \: \: x = \frac{ - 5}{2}$