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Simplifying
7x2 + -448 = 0
Reorder the terms:
-448 + 7x2 = 0
Solving
-448 + 7x2 = 0
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '448' to each side of the equation.
-448 + 448 + 7x2 = 0 + 448
Combine like terms: -448 + 448 = 0
0 + 7x2 = 0 + 448
7x2 = 0 + 448
Combine like terms: 0 + 448 = 448
7x2 = 448
Divide each side by '7'.
x2 = 64
Simplifying
x2 = 64
Take the square root of each side:
x = {-8, 8}
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