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Simplifying
4x * 4x + 3x * 3x = 20 * 20
Reorder the terms for easier multiplication:
4 * 4x * x + 3x * 3x = 20 * 20
Multiply 4 * 4
16x * x + 3x * 3x = 20 * 20
Multiply x * x
16x2 + 3x * 3x = 20 * 20
Reorder the terms for easier multiplication:
16x2 + 3 * 3x * x = 20 * 20
Multiply 3 * 3
16x2 + 9x * x = 20 * 20
Multiply x * x
16x2 + 9x2 = 20 * 20
Combine like terms: 16x2 + 9x2 = 25x2
25x2 = 20 * 20
Multiply 20 * 20
25x2 = 400
Solving
25x2 = 400
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Divide each side by '25'.
x2 = 16
Simplifying
x2 = 16
Take the square root of each side:
x = {-4, 4}
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