Question

1.
simplify (√7+√5)²​

Answer 1

Step-by-step explanation:

(a+b)^2

=a^2+ b^2 +2ab

Here,

(√7 + √5)²

= (√7)²+(√5)²+2×√7×√5

= 7+5+2√(7×5)

= 12+2√35.

Answer 2

Step-by-step explanation:

$( \sqrt{7 } + \sqrt{5} ) {}^{2} \\ ( \sqrt{7} {}^{2} ) + ( \sqrt{5} ) {}^{2} + 2 \times \sqrt{7} \times \sqrt{5 } \\ 7 + 5 + \sqrt[2]{35} \\ 12 + \sqrt[2]{35}$

I hope it helps you.....................