Question

A) x(x+1)+x(x+2) ;
b) 2x(x+1)+(x+1)(x-3);
c) x la puterea 3 - 3x la puterea 2 + x ;
d) a(x+y)-b(x+y) ;
e)(a+1)(a-1)+(a+1) la puterea 2 ;
f)(x+2) la puterea 2 - (x+2)(x-1)
g) (a- radical din 6)(a+radical din 6) -(a-radical din 6)(radical din 6 - 3a).cerinta: scrieti ca produs de 2 factori diferiti de 1

Answer 1

A)xpatrat +x +x patrat + 2x=2xpatrat +3x=x(2x+3) B)2xpatrat

Answer 2

a)x(x+1)+x(x+2)=x2+x+x2+2x=2x2+3x
a(x+y)-b(x+y)=ax+ay-bx-by
2x(x+1)+(x+1)(x-3)=2x2+2x+x2-3x+x-3=3x2-3
(a+1)(a-1)+(a+1)la puterea 2=a2-1+a2+2a+1=2a2+2a