Solve for D
D=105
Assign D
D≔105
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D=81-4\times 3\left(-2\right)
Calculate 9 to the power of 2 and get 81.
D=81-12\left(-2\right)
Multiply 4 and 3 to get 12.
D=81-\left(-24\right)
Multiply 12 and -2 to get -24.
D=81+24
The opposite of -24 is 24.
D=105
Add 81 and 24 to get 105.
Examples
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Matrix
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Simultaneous equation
\left. \begin{cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end{cases} \right.
Differentiation
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
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Limits
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