2x^2-11x+15 please ...

Question

2x^2-11x+15 please ...

Answer 1

2x²-11x+15
D=11²-4,2*15=121-120=1
x=(11±1)/2*2
x1=12/4=3
x2=10/4=2,5
2x²-11x+15=2(x-3)(x-2,5) = (x-3)(2x-5)