Question

Carry out the multiplication of the expressions in the following pair:
$a+b,7a^2{b}^2$
[2 marks]

Answer 1

$(a+b)\times 7a^2{b}^2$
$=a\times 7a^2{b}^2+b\times 7a^2{b}^2$
[1 mark]

$=7a^3{b}^2+7a^2{b}^3$
[1 mark]