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Simplifying
352 = 7x2 + 9
Reorder the terms:
352 = 9 + 7x2
Solving
352 = 9 + 7x2
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-7x2' to each side of the equation.
352 + -7x2 = 9 + 7x2 + -7x2
Combine like terms: 7x2 + -7x2 = 0
352 + -7x2 = 9 + 0
352 + -7x2 = 9
Add '-352' to each side of the equation.
352 + -352 + -7x2 = 9 + -352
Combine like terms: 352 + -352 = 0
0 + -7x2 = 9 + -352
-7x2 = 9 + -352
Combine like terms: 9 + -352 = -343
-7x2 = -343
Divide each side by '-7'.
x2 = 49
Simplifying
x2 = 49
Take the square root of each side:
x = {-7, 7}
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