Question

Factorise

x2+5x+4

Factorise

Answer 1

x2+5x+4x
x2+(x+4x)+4
x2+4x+x+4
x(x+4)+1(x+4)
(x+1)(x+4)​ 

Answer 2

${x}^{2} + 5x + 4 \\ {x}^{2} + (4 + 1)x + 4 \\ {x}^{2} + 4x + x + 4 \\ x(x + 4) + 1(x + 4) \\ (x + 1)(x + 4)$