Math, asked by mohanyadav5098, 7 months ago

7x²+18xy-9y²
5x²y²-5xy-360

Answers

Answered by sushanthgidde2247

2

1. 7x^2+21x-3x-9y

7x (x+3) -3 (x+3)

(7x-3) (x+3)

2. ans is 25x2 - y2

because

(a+b) (a-b) = a2 -b2

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