Question

simplify
please solve it quickly​

Answer 1

Step-by-step explanation:

${( \sqrt{7} + \sqrt{2)}}^{2} \\ = {( \sqrt{7)} }^{2} + {( \sqrt{2} )} ^{2} + 2 \times \sqrt{7} \times \sqrt{2} \\ = 7 + 2 + 2 \sqrt{14} \\ = 9 + 2 \sqrt{14}$