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Simplifying
70 = (3x)(4x)
Remove parenthesis around (3x)
70 = 3x(4x)
Remove parenthesis around (4x)
70 = 3x * 4x
Reorder the terms for easier multiplication:
70 = 3 * 4x * x
Multiply 3 * 4
70 = 12x * x
Multiply x * x
70 = 12x2
Solving
70 = 12x2
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-12x2' to each side of the equation.
70 + -12x2 = 12x2 + -12x2
Combine like terms: 12x2 + -12x2 = 0
70 + -12x2 = 0
Add '-70' to each side of the equation.
70 + -70 + -12x2 = 0 + -70
Combine like terms: 70 + -70 = 0
0 + -12x2 = 0 + -70
-12x2 = 0 + -70
Combine like terms: 0 + -70 = -70
-12x2 = -70
Divide each side by '-12'.
x2 = 5.833333333
Simplifying
x2 = 5.833333333
Take the square root of each side:
x = {-2.415229458, 2.415229458}
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