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Simplifying
5x2 = 420 + -2x2
Solving
5x2 = 420 + -2x2
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '2x2' to each side of the equation.
5x2 + 2x2 = 420 + -2x2 + 2x2
Combine like terms: 5x2 + 2x2 = 7x2
7x2 = 420 + -2x2 + 2x2
Combine like terms: -2x2 + 2x2 = 0
7x2 = 420 + 0
7x2 = 420
Divide each side by '7'.
x2 = 60
Simplifying
x2 = 60
Take the square root of each side:
x = {-7.745966692, 7.745966692}
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