Question

Descompuneti in factori:
a) x^{2}-y^{2}=
b) x^{2}-9=
c) 4-a^{2}=
d) 9y^{2}-16z^{2}=
e) 25x^{2}-9y^{2}=
f) a^{2}b^{2}-49=
Sper ca ma puteti ajuta!!

Answer 1

[tex]a)x^2-y^2=(x-y)(x+y)\\ b)x^2-9=(x-3)(x+3)\\ c)4-a^2=(2-a)(2+a)\\ d)9y^2-16z^2=(3y-4z)(3y+4z)\\ e)25x^2-9y^2=(5x-3y)(5x+3y)\\ f)a^b\cdot b^2-49=(ab-7)(ab+7)[/tex]

Answer 2

a)  [tex] x^{2}- y^{2} =(x-y)(x+y) [/tex]

b)  $x^{2} -9=(x-3)(x+3)$

c)  $4-a^2=(2-a)(2+a)$

d)  $9y^2-16z^2=(3y-4)(3y+4)$

e)  $25 x^{2}-9y^2=(5x-3y)(5x+3y)$

f)  $a^2b^2-49=(ab-7)(ab+7)$