Question

ayudenme porfavor es para hoy

Answer 1

A. $\frac{(2x+y)(2x-y)}{2}=\frac{4x^{2}-y^{2} }{2} =\frac{4x^{2} }{2} -\frac{y^{2} }{2}=2x^{2} -\frac{y^{2} }{2}$

B. $(7x-7y)(7x+7y)=49x^{2} -49y^{2}$

C. $(4x-5y)(4x+5y)=16x^{2} -25y^{2}$

D. $(5x-5)(5x+5)=25x^{2} -25$