Question

Blake knows that one of the solutions to x2 – 6x + 8 = 0 is x = 2. What is the other solution?

x = –6
x = –3
x = 4
x = 8

Answer 1

@triciaal

Answer 2

plug in each answer choice and see which value of x makes the left side equal to 0

Answer 3

for example, choice A,

x = -6

x^2 - 6x + 8 = 0

(-6)^2 - 6(-6) + 8 = 0 ... replace every x with -6

36 + 36 + 8 = 0

80 = 0 ... this is false, so x = -6 is NOT a solution

Answer 4

given that one of the solution is x = 2 then you know (x-2) is a factor

Answer 5

So C Is The Answer Correct