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Can you please help me solve this equation (-3√7)²+(3√11)²?

Can you please help me solve this equation (-3√7)²+(3√11)²?
asked 15.7k views
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Can you please help me solve this equation (-3√7)²+(3√11)²?

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User Germmand
by
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2 Answers

4 votes

(-3√(7))^(2) + (3√(11))^(2) \\(-3√(7))(-3√(7)) + (3√(11))(3√(11)) \\9√(49) + 9√(121) \\9(7) + 9(11) \\63 + 99 \\162
answered
User Torben Pi Jensen
by
9.4k points
5 votes
(-3√7)^2= 9*7=63 when you raise to the second power, -3 becomes 9
and √7 becomes 7
(3√11)^2=9*11=99
99+63=162
answered
User LefterisL
by
9.0k points
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