X(2)-8x+15=0
4 answers
Is it 5/2?
I don't know it is x=5 x=3 I need the steps
You suppose to completing the square
x^2-8x+15 = 0
x^2-8x+16 = 1
(x-4)^2 = 1
x-4 = ±1
x = 4±1
x^2-8x+16 = 1
(x-4)^2 = 1
x-4 = ±1
x = 4±1