Answer:
3x^2 + 7x - 18
Step-by-step explanation:
-3(2x-4)+8x-8
-6x+12+8x-8
2x+4
x=2
Answer:
Segment Addition Postulate
Step-by-step explanation:
Answer:
x = -3 or x = 3
Step-by-step explanation:
Subtract 9 from both sides.
x^2 - 9 = 0
Factor the left side. There is no common factor of the terms. It is a binomial which is the difference of two squares, so it factors into the product of a sum and a difference.
(x + 3)(x - 3) = 0
Set each factor equal to zero.
x + 3 = 0 or x - 3 = 0
Solve each equation.
x = -3 or x = 3
Answer:
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