Question

using identities find (3x-5y)²​

Answer 1

9x² - 30xy + 25y³

Step-by-step explanation:

REFER THE ATTACHMENT

Answer 2

Answer:

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Step-by-step explanation:

Using identity

$(a - b) {}^{2} = a {}^{2} - 2ab + b {}^{2}$

$(3x - 5y) {}^{2} = (3x) {}^{2} - 2(3x)(5y) + (5y) {}^{2} \\ \\ (3x - 5y) {}^{2} = 9{x}^{2} - 2(15xy) + 25y {}^{2} \\ \\ (3x - 5y) {}^{2} = 9 {x}^{2} - 30xy + 25 {y}^{2}$