( 13,7 ) ^ { 2 } = 25 + 144 - 120 x
Solve for x
x=-0,15575
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187,69=25+144-120x
Calculate 13,7 to the power of 2 and get 187,69.
187,69=169-120x
Add 25 and 144 to get 169.
169-120x=187,69
Swap sides so that all variable terms are on the left hand side.
-120x=187,69-169
Subtract 169 from both sides.
-120x=18,69
Subtract 169 from 187,69 to get 18,69.
x=\frac{18,69}{-120}
Divide both sides by -120.
x=\frac{1869}{-12000}
Expand \frac{18,69}{-120} by multiplying both numerator and the denominator by 100.
x=-\frac{623}{4000}
Reduce the fraction \frac{1869}{-12000} to lowest terms by extracting and canceling out 3.
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