Solve for A
A=9-2x-28x^{2}
Solve for x (complex solution)
x=\frac{\sqrt{253-28A}-1}{28}
x=\frac{-\sqrt{253-28A}-1}{28}
Solve for x
x=\frac{\sqrt{253-28A}-1}{28}
x=\frac{-\sqrt{253-28A}-1}{28}\text{, }A\leq \frac{253}{28}
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A=7x-\left(28x^{2}+9x-9\right)
Use the distributive property to multiply 4x+3 by 7x-3 and combine like terms.
A=7x-28x^{2}-9x+9
To find the opposite of 28x^{2}+9x-9, find the opposite of each term.
A=-2x-28x^{2}+9
Combine 7x and -9x to get -2x.
Examples
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Matrix
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Simultaneous equation
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Differentiation
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Integration
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Limits
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