expand (x+1)(x-2) — step-by-step solution

Let's write in expanded form:

(x + 1) \cdot (x - 2)

x \cdot x

+ x \cdot -2

+ 1 \cdot x

+ 1 \cdot -2

ℹ

x \cdot x

x^{2}

‖

x \cdot -2

- x \cdot 2

‖

1 \cdot x

x

‖

1 \cdot -2

-2

x^{2}

- x \cdot 2

+ x

- 2

▷Answer: $x^{2} - x - 2$