English, asked by ayushinainayadav, 8 months ago

Factorise 4a²+9+25b²+12a-30b-20ab

Answers

Answered by meghnarak24

0

Answer:

Explanation:

4a^2+ 9+25b^2+12a-30b-20ab

=(2a)^2+ (3)^2+(-5b)^2+ 2*(2a)*3+2*3*(-5b)+2*(-5b)*2a

=(2a+3-5b)^2

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