Question

(3+2√5) (3-3√5) is ?​

Answer 1

Answer:

this is your answer -11

plz mark as brainliest

Answer 2

ANSWER :-

We have to evaluate the (3+2√5) (3-3√5) - -

$(3 + 2 \sqrt{5} ) (3 - 3 \sqrt{5} ) \\ \\ = > \: 3(3 - 3 \sqrt{5} ) + 2 \sqrt{5} \: ( 3 - 3 \sqrt{5} ) \\ \\ = > 9 - 9 \sqrt{5} + 6 \sqrt{5} - 6 { (\sqrt{5} )}^{2} \\ \\ = > 9 - 3 \sqrt{5} - 6 \times 5 \\ \\ = > 9 - 3 \sqrt{5} -30 \\ \\ = > - 21 - 3 \sqrt{5} \\ \\ = > - 3(7 + \sqrt{5} )$

Hence, the evaluation of (3+2√5) (3-3√5) is -3(7+√ 5).