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Simplifying
2x2 + 5x2 = 261
Combine like terms: 2x2 + 5x2 = 7x2
7x2 = 261
Solving
7x2 = 261
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Divide each side by '7'.
x2 = 37.28571429
Simplifying
x2 = 37.28571429
Take the square root of each side:
x = {-6.106202936, 6.106202936}
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