7x^2=21

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Solution for 7x^2=21 equation: 


Simplifying
7x2 = 21

Solving
7x2 = 21

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Divide each side by '7'.
x2 = 3

Simplifying
x2 = 3

Take the square root of each side:
x = {-1.732050808, 1.732050808}

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