Solve for x
x=1
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2x+7=9
Square both sides of the equation.
2x+7-7=9-7
Subtract 7 from both sides of the equation.
2x=9-7
Subtracting 7 from itself leaves 0.
2x=2
Subtract 7 from 9.
\frac{2x}{2}=\frac{2}{2}
Divide both sides by 2.
x=\frac{2}{2}
Dividing by 2 undoes the multiplication by 2.
x=1
Divide 2 by 2.
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Matrix
\left[ \begin{array} { l l } { 2 } & { 3 } \\ { 5 } & { 4 } \end{array} \right] \left[ \begin{array} { l l l } { 2 } & { 0 } & { 3 } \\ { -1 } & { 1 } & { 5 } \end{array} \right]
Simultaneous equation
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\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
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Limits
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