Question

Expand and simplify (x+2)(x+1)

Answer 1

$x{2} + x + 2x + 2 \\ \\ x{2} + 3x + 2 \\ \\ answer$

Answer 2

we know that the formula of (x+a)(x+b)=x^2+(a+b)x+ ab

so putting x=x a=2 b=1

(x+2)(x+1)=x^2+(2+1)x+2×1

x^2+3x+2

hope it helps

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