Question

detailed answer for question no 4

Answer 1

$\boxed{\begin{minipage}{5 cm}\dag \: \: {\underline{\bf{Law of exponentes}}\\\\\sf{ \bigstar \dfrac{a^m}{a^n} = a(m-n) }\\\\\sf{ \bigstar (a^m)(a^n) = a(m+n) }\\\\\sf{\bigstar{ \dfrac{1}{n} = n^-1 }\end{minipage}}$

Answer 2

so the answer is √7 + 2.

Hope it helps.

THANK YOU.