Question

factorise 3x²+10x+8​

Answer 1

3x²+10x+8

= 3x²+(6+4)x+8

=3x²+6x+4x+8

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

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

Answer 2

$3 {x}^{2} + 10x + 8 \\ 3 {x}^{2} + 6x + 4x + 8 \\ 3x (x + 2) + 2(x + 2) \\ (3x + 2)(x + 2) \\ 3x + 2 = 0 \\ x + 2 = 0 \\ x = - \ \frac{2}{3} \\ x = - 2$