7a^2+9=457

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Solution for 7a^2+9=457 equation:


Simplifying
7a2 + 9 = 457

Reorder the terms:
9 + 7a2 = 457

Solving
9 + 7a2 = 457

Solving for variable 'a'.

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

Add '-9' to each side of the equation.
9 + -9 + 7a2 = 457 + -9

Combine like terms: 9 + -9 = 0
0 + 7a2 = 457 + -9
7a2 = 457 + -9

Combine like terms: 457 + -9 = 448
7a2 = 448

Divide each side by '7'.
a2 = 64

Simplifying
a2 = 64

Take the square root of each side:
a = {-8, 8}

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