Question

Write down the squares

1: 3x+5y
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Answer 1

Answer:

(3x+5y)^2

=(3x)^2+(2×3x×5y)+(5y)^2

=9x^2+30xy+25y^2

Step-by-step explanation:

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Answer 2

Answer:

$(3x + 5y) {}^{2} \\ (a + b) {}^{2} = a {}^{2} + b {}^{2} + 2ab \\ = 3x {}^{2} + 5y {}^{2} + 2.3x + 5y$

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