X=-5 and Y=-6 (x+3y) squared.

1 answer:

Semmy [17]3 years ago

3 0

(x+3y)^2
((-5)+3(-6))^2
(-5+3·6)^2
(-5+18)^2
(-5+18)(-5+18)
25-90-90+324
169 is your answer.

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