Question

Simplify the following expression. 1) (5+√7) (2+√5)​

Answer 1

10+5-/5+2-/7+-/35

I got this answer.

hope u understood.

Answer 2

,$\huge\mathcal{\fcolorbox{cyan}{black}{\pink{answer}}}$

1.

$(5 + \sqrt{7}) (2 + \sqrt{5} ) \\ \\ = 5 \times 2 + 5 \times \sqrt{5} + \sqrt{7} \times 2 + \sqrt{7} \times 5 \\ \\ = 10 + 5 \sqrt{5} + 2 \sqrt{7} + \sqrt{35} \: ans$