Question

15. Simplify using identities
1) (6x-5y Square
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Answer 1

(a-b)^2 = a^2-2ab+b^2

a=6y and b= 5y

(a-b)^2 = a^2-2ab+b^2a=6y and b= 5y 36y^2-2×6x-5y+5y^2

(a-b)^2 = a^2-2ab+b^2a=6y and b= 5y 36y^2-2×6x-5y+5y^2=36y^2-60xy+25y^2