Question

(2√3 + 3√5)(2√3 - 2√5)​

Answer 1

Answer:

the answer for this question is 4*3-6*5

Answer 2

Answer

$(2 \sqrt{3} + 3 \sqrt{5} ) \: (2 \sqrt{3} - 3 \sqrt{5})$

We use formula

$(a + b)(a - b) = a {}^{2} - b {}^{2}$

Required Answer

$(2 \sqrt{3} ) {}^{2} - (3 \sqrt{5} ) {}^{2} \\ 2 \times \sqrt{9} - 3 \times \sqrt{25} \\ 2 \times 3 - 3 \times 5 \\ 6 - 15 \\ - 9$

-9 Is the Answer