Question

Rezolvati ecuatiile:
a) (x+1)(x-1)=8
b) (x-3)(x+3)=7
c) (x-4)(x+4)=2
d) (2x-3)(2x+3)=11
e) 3(x+5)(x-5)=72
f) 5(1-3x)(1+3x)= -10
Repede va rog!!!

Answer 1

(X+1)(x-1)=8

X^2-1^2=8

X^2=8+1

X^2=9

X=radical 9

X=3 sau -3

Analog pt celelalte

Answer 2

Gata am terminat Sper că te-am ajutat