Question

Ayudente porfavooor!!! es urgenteee!!!

Answer 1

Explicación paso a paso:

a) $(a+4)^{2} =a^{2}+2*(a)*(4)+4^{2}\\(a+4)^{2}=a^{2}+8a+16$

b) $(x+5)^{2} =x^{2}+2*(x)*(5)+5^{2}\\(x+5)^{2}=x^{2}+10x+25$

c) $(3x-4y)^{2} =(3x)^{2}-2*(3x)*(4y)+(4y)^{2}\\(a+4)^{2}=9x^{2}-24xy+16y^{2}$

d) $(a+8)(a-8)=a^{2} -8^{2} =a^{2}-64$

e) $(x^{2} +3y)(x^{2} -3y)=x^{4} -(3y)^{2} =x^{4} -9y^{2}$