Question

By using standard formula expand the following :-
(2x + 7y)2

Answer 1

Answer:

your answer is 4x+14y

Step-by-step explanation:

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Answer 2

Answer:

4x^2+49y^2+28xy is ur answer.

Step-by-step explanation:

(2x+7Y)^2

By using (a+b) ^2=a^2+b^2+2ab

a=2x;b=7y substitute in the formula

(2x)^2+(7y)^2+2(2x)(7y)

4x^2+49y^2+28xy

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