Evaluate
9
Factor
3^{2}
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\frac{28-1}{3}
Since \frac{28}{3} and \frac{1}{3} have the same denominator, subtract them by subtracting their numerators.
\frac{27}{3}
Subtract 1 from 28 to get 27.
9
Divide 27 by 3 to get 9.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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y = 3x + 4
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Matrix
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Simultaneous equation
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Differentiation
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
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Limits
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