Question

Factorize 16x^2 + 25y^2

It has to be factorized using the identity ( a^2+b^2 ) = ( a+b )^2 - 2ab

Answer 1

(4x)^2 + (5y)^2

( a^2 + b^2)

=( a +b )^2-2ab = (4x+5y )^2 -2(4x)(5y) = then we use the formula (a +b)^2= (a^2 +b^2)+(2ab)

(4x)^2 + (5y )^2 +2(4x)(5y)-2(4x)(5y) and.