Question

Multiple the binomials.
$(a+3b)$ and $(x+5)$

Answer 1

Given binomials are $(a+3b)$ and $(x+5)$

On multiplying them, we get:

$(a+3b)\times (x+5)$

$=a(x+5)+3b(x+5)$

$=ax+5a+3bx+15b$

$=ax+3bx+5a+15b$

Hence, $(a+3b)\times (x+5)=ax+3bx+5a+15b$.