Solve for x
x<1
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x^{2}-1<6-7x+2x^{2}-x^{2}
Use the distributive property to multiply 3-2x by 2-x and combine like terms.
x^{2}-1<6-7x+x^{2}
Combine 2x^{2} and -x^{2} to get x^{2}.
x^{2}-1+7x<6+x^{2}
Add 7x to both sides.
x^{2}-1+7x-x^{2}<6
Subtract x^{2} from both sides.
-1+7x<6
Combine x^{2} and -x^{2} to get 0.
7x<6+1
Add 1 to both sides.
7x<7
Add 6 and 1 to get 7.
x<\frac{7}{7}
Divide both sides by 7. Since 7 is positive, the inequality direction remains the same.
x<1
Divide 7 by 7 to get 1.
Examples
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4 \sin \theta \cos \theta = 2 \sin \theta
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y = 3x + 4
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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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