Question

Using a suitable identity, find of the following product:
$(x+3)(x+3)$

Answer 1

To find the product of $(x+3)(x+3)$

Now using $(a+b)(a+b)=a^2+b^2+2ab$

we have , let $4a=x$ and let $b=3$

Thus, $(x+3)(x+3)=x^2+9+6x$