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Simplifying
98 = (5x)(2x)
Remove parenthesis around (5x)
98 = 5x(2x)
Remove parenthesis around (2x)
98 = 5x * 2x
Reorder the terms for easier multiplication:
98 = 5 * 2x * x
Multiply 5 * 2
98 = 10x * x
Multiply x * x
98 = 10x2
Solving
98 = 10x2
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-10x2' to each side of the equation.
98 + -10x2 = 10x2 + -10x2
Combine like terms: 10x2 + -10x2 = 0
98 + -10x2 = 0
Add '-98' to each side of the equation.
98 + -98 + -10x2 = 0 + -98
Combine like terms: 98 + -98 = 0
0 + -10x2 = 0 + -98
-10x2 = 0 + -98
Combine like terms: 0 + -98 = -98
-10x2 = -98
Divide each side by '-10'.
x2 = 9.8
Simplifying
x2 = 9.8
Take the square root of each side:
x = {-3.130495169, 3.130495169}
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