Question

(a+2)(a-1) expand it please fast

Answer 1

we will use identity IV : (x+a)(x+b)
=(x square) +(a+b)x+ab
so,
(a+2)(a-1)
=a square+(2-1)a -2
=a square +a-2

Answer 2

The require answer is $a^{2} +a -2$.

As per the question we need to expand the (a+2)(a-1)

we will use identity IV : (x+a)(x+b)

so,

(a+2)(a-1)

=$a^{2} +2a - a -2$

=$a^{2} +a -2$

Hence the require answer is $a^{2} +a -2$.

To learn more algebra follow the given link

https://brainly.com/question/14413003?

#SPJ3