63=I^2(7)

Solution for 63=I^2(7) equation:

Simplifying
63 = I2(7)

Reorder the terms for easier multiplication:
63 = 7I2

Solving
63 = 7I2

Solving for variable 'I'.

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

Add '-7I2' to each side of the equation.
63 + -7I2 = 7I2 + -7I2

Combine like terms: 7I2 + -7I2 = 0
63 + -7I2 = 0

Add '-63' to each side of the equation.
63 + -63 + -7I2 = 0 + -63

Combine like terms: 63 + -63 = 0
0 + -7I2 = 0 + -63
-7I2 = 0 + -63

Combine like terms: 0 + -63 = -63
-7I2 = -63

Divide each side by '-7'.
I2 = 9

Simplifying
I2 = 9

Take the square root of each side:
I = {-3, 3}