Answer:
2 or C
Step-by-step explanation:
I'm taking this to mean
4 = 2(x - 1)^2
4 = 2(x^2 - 2x + 1)
4 = 2x^2 - 4x + 2
2x^2 - 4x - 2 = 0
x^2 - 2x - 1 = 0
What you get from here is sqrt(2) as one of the roots.
That is not nearly an answer.
4 = 4(x -1)
4 = 4x - 4
8 = 4x
x = 8/4
x = 2
That makes C the answer.
6W (-12x) + 7W (-8x) = 13W - 20x
Explanation:
6W + 7W = 13W
-12x - 8x = -20x
You will multiply A by 5 and B by 2.
A: 5(2x - 3y) = -6(5)
B: 2(-5x - 9y) = 15(2)
Simplify.
A: 10x - 15y = -30
B: -10x - 18y = 30
When you add down:
10x + (-10x) = 0 <--- Eliminates the x-value.
(-15y) + (-18y) = -33y
(-30) + 30 = 0
Your ending solution will be -33y = 0
Hope this helps! :)
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