Question

x la puterea a2a -6x+12=2x-3

Answer 1

x^2-6x+12=2x-3
x^2-6x-2x+12+3=0
x^2-8x+15=0
delta=b^2-4ac
delta=64-4*1*15
delta=64-60
delta=4

x1=-b-radical delta/2a
x1=-(-8)-2/2
x1=8-2/2
x1=6/2
x1=3

x2=-b+radical delta/2a
x2=-(-8)+2/2
x2=8+2/2
x2=10/2
x2=5

Answer 2

x²-6x+12=2x-3
x²-8x+15=0
E o ecuatie de gradul doi: 
Δ=b²-ac
Δ=64-60=4
√Δ=2
x1=b+√Δ supra 2a=  8+2 supra 2= 5
x1=5
x2=b-√Δ supra 2a= 8-2 supra 2= 2 
x2=3