(2x+5y) (2x+3y)using(a+b)method
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(a+b)(a+b)=a^2+2ab+b^2
(2x+5y)(2x+5y)
=(2x)^2+(2×2x×5y)+(5y)^2
=4x^2+20xy+25y^2
(2x+5y)(2x+5y)
=(2x)^2+(2×2x×5y)+(5y)^2
=4x^2+20xy+25y^2
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