Question

Find the expansion of (3 x square Y + 5 Z )whole square

Answer 1

Answer:

$\left(3x^2y+5z\right)^2$

       Using formula, $\left(a+b\right)^2=a^2+2ab+b^2$

       Where, $a=3x^2y,\:\:b=5z$

$\left(3x^2y\right)^2+2(3x^2y)(5z)+\left(5z\right)^2$

$9x^4y^2+30x^2yz+25z^2$