Question

factorise (x+2)^2-(x+4)^2​

Answer 1

Using,

a²- b² = (a+b)(a-b)

(x+2)² - (x+4)²

= (x+ 2 + x +4)×(x+2 -(x+4))

= (2x + 6)(-2)

= -4(x+3)