Question

1.Descompuneti în factori:
a)x^2-2x+1-2y^2
b) x^2-2xy+y^2-4z^2
c) x^2-y^2-z^2-2xy
d)x^2-2xy+y^2-a^2+2ab-b^2
e) a^3+a^2x+ax^2+x^3
f) a^3+a^2b-ab^2-b^3
g) x^2-(a+b)x+ab
h) x^2+(a-b)x-ab
i) x^2-(a-b)x-ab
j) x^2+4x+3
k)x^2-5x+6
l)x^2-7x+12

Dau Coroana​

Answer 1

a)=x2-20-2y2

j)x2+3x+x+=

x×(x+3)+x+3

=(x+3)×(x+1)

k)x2-5×6

x2-(5×6)

=x2-30

l)x2-3x-4x+12

x×(x-3)-4(x-3)

=(x-3)×(x-4)

Imi ceŕ scz. leam facut pe alea pe care leam stiut