Solve for h
h=-x\left(4x+9\right)
Solve for x (complex solution)
x=\frac{\sqrt{81-16h}-9}{8}
x=\frac{-\sqrt{81-16h}-9}{8}
Solve for x
x=\frac{\sqrt{81-16h}-9}{8}
x=\frac{-\sqrt{81-16h}-9}{8}\text{, }h\leq \frac{81}{16}
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9x+h=-4x^{2}
Subtract 4x^{2} from both sides. Anything subtracted from zero gives its negation.
h=-4x^{2}-9x
Subtract 9x from both sides.
Examples
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Linear equation
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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