(2y+3y)^2+(7x+y)^2+(3x+x)^2
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Answer:
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Answer:
65x^2+26y^2+14xy
Step-by-step explanation:
(5y)^2+(7x+y)^2+(4x)^2
25y^2+49x^2+y^2+14xy+16x^2
65x^2+26y^2+14xy
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