Sidicalliahviz
Answered

what is the answer of the following:(x+5)(x-5) and (a-b)(a+b) and (x+8)(x-y) and (x-8)(x+8) and(2x+5)(2x-5)

Sagot :

Mlcparra16viz
Using FOIL method

[tex](x+5)(x-5)= x^{2} -25[/tex]
[tex](a-b)(a+b)= a^{2} - b^{2} [/tex]
[tex](x+8)(x-y)= x^{2} -xy+8x-8y[/tex]
[tex](x-8)(x+8)= x^{2} -64[/tex]
[tex](2x+5)(2x-5)=4 x^{2} -25[/tex]