Blake knows that one of the solutions to x2 – 6x + 8 = 0 is x = 2. What is the other solution? A. x = –6 B. x = –3 C. x = 4 D. x
= 8
2 answers:
Answer:
C
Step-by-step explanation:
The sum of the roots = - 
that is x₁ + x₂ = -
x₁ = 2 and x₂ has to be found
Given
x² - 6x + 8 = 0
with a = 1, b = - 6, c = 8, then
2 + x₂ = - 
= 6 ( subtract 2 from both sides )
x₂ = 4
The other solution is x = 4 → C
Step-by-step explanation:
x2 - 6x + 8 = 0
x2 - 4x - 2x + 8 = 0
x(x - 4) - 2(x - 4) = 0
(x-4)(x-2) =0
x-4 = 0. x-2 = 0
x = 4. x = 2
Option C is the correct answer
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