Question

$(4x+7y)^2-56xy=(4x)^2+(7y)^2.$
hence prove it​

Answer 1

Answer:

LHS =RHS

Step-by-step explanation:

using formula (A+B)^2 = A^2 +2AB+B^2

LHS

( 4x)^2 + 2× 4x×7y + ( 7y) ^2 - 56xy

( 4x)^2 + 56xy + ( 7y) ^2 - 56xy

( 4x)^2 +(7y)^2

( 4x)^2 +(7y)^2 is equal to RHS

Hence, Proved