This value of "a" is exactly the y-coordinate of the vertex of the parabola
y = x%5E2+%2B+4x++-+31.
To find it, complete the square:
x%5E2+%2B+4x++-+31 = %28x%2B2%29%5E2+-+4+-+31 = %28x%2B2%29%5E2+-+35.
So, this value of "a" is a = -35.
Figure. Plot y = x%5E2+%2B+4x++-+31.
2x10^-10
1x10^-10
8x10^-11
7x10^-11
Answer:
8 - 12 + 6x
-4 + 6x
or
6x - 4
Step-by-step explanation:
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