Question

use suitable identity and find product (3x+7y) square
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Answer 1

◦•●◉✿answer:

(3x - 7y)^2 =

(3x - 7y)(3x - 7y) =

3x(3x - 7y) - 7y(3x - 7y) = 9x^2 - 21xy - 21xy + 49y^2.

.now combine like terms = 9x^2 - 42xy + 49y^2✿◉●•◦

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Answer 2

Answer:

3x square+2(3x)(7y) + 7y square

9x square+42xy +49y square(identity 1)

Step-by-step explanation:

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