Question

va rog frumos cine poate sa imi rezolve exercitiul 11.

Answer 1

a) 5x^2+30x+45=5(x^2+6x+9)=5(x+3)^2
b)=x(x^2-8x+16)=x(x-4)^2
c)=V3(y^2+2V5y+5)=V3(y+V5)^2
d)=3x^3(x^2+12x+36)=3x^3(x+6)^2
e)=7a(y^2-4y+4)=7a(y-2)^2
f)=4x(y^2-8y+16)=4x(y-4)^2
g)=(x+1)(y^2+6y+9)=(x+1)(y+3)^2
h)=(x-3)[(y+8)^2+2(y+8)+1]=(x-3)(y+8+1)^2=(x-3)[(y+9)^2]