Question

de dcompuneti in factori expresia:
a)x²+14x+48
b)2x²+11x+5=0
c)-3x²-5x+2=0
d)z²+7x+10=0
va rog mult imi trebu urgent​

Answer 1

Explicație pas cu pas:

a) x^2+14x+48=x^2+8x+6x+48=x(x+8)+6(x+8)=(x+6)(x+8)

b) 2x^2+11x+5=2x^2+10x+x+5=2x(x+5)+x+5=(x×5)(2x+1)

c) -3x^2-5x+2=-3x^2+x-6x+2=-x(3x-1)-2(3x-1)=-(3x-1)(x+2)

d) z^2+7x+10=x^2+5x+2x+10=x(x+5)+2(x+5)=(x+5)(x+2)