Question

simplify
$( \sqrt{7} + 3) {}^{2}$
​

Answer 1

Step-by-step explanation:

$( { \sqrt{7} + 3 })^{2} = { \sqrt{7} }^{2} + {3}^{2} + 2 \times \sqrt{7} \times 3 = 7 + 9 + 6 \sqrt{7 } = 16 + 6 \sqrt{7} = 2(8 + 3 \sqrt{7} )$

formula : (a+b)^2=a^2 + b^2 + 2ab