Question

x(3x-5)-2(x^2-4)
ajutor dau coroana

Answer 1

x(3x-5)-2$( x^{2} -4)$=
=$3x^{2}$-5x-$2x^{2}$+8=
=$x^{2}$-5x+8

Answer 2

x(3x-5) - 2(x²-4)=0
3x²-5x-2x²+8=0
x²-5x+8=0

a=1
b=-5
c=8

Δ=b²-4ac=(-5)²-4*1*8=25-32=-7
Δ<0 rezulta ce ecuatia nu are solutii