Find the following products: (3 x+5)(3 x+11) - Vidyadip

Question

Find the following products:
$(3 x+5)(3 x+11)$

✓

Answer

Here, we will use the identity $(x+a)(x+b)=x^2+(a+b) x+a b$.
$(3 x+5)(3 x+11)$
$=(3 x)^2+(5+11)(3 x)+5 \times 11$
$=9 x^2+48 x+55$

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