Evaluate
-\frac{8ab}{3}-12a^{2}-16b^{2}
Expand
-\frac{8ab}{3}-12a^{2}-16b^{2}
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\frac{\frac{1}{3}a^{2}b^{2}\left(9a^{2}+2ab+12b^{2}\right)}{-\frac{1}{4}a^{2}b^{2}}
Factor the expressions that are not already factored.
\frac{\frac{1}{3}\left(9a^{2}+2ab+12b^{2}\right)}{-\frac{1}{4}}
Cancel out a^{2}b^{2} in both numerator and denominator.
\frac{3a^{2}+\frac{2}{3}ab+4b^{2}}{-\frac{1}{4}}
Expand the expression.
\frac{\left(3a^{2}+\frac{2}{3}ab+4b^{2}\right)\times 4}{-1}
Divide 3a^{2}+\frac{2}{3}ab+4b^{2} by -\frac{1}{4} by multiplying 3a^{2}+\frac{2}{3}ab+4b^{2} by the reciprocal of -\frac{1}{4}.
-\left(3a^{2}+\frac{2}{3}ab+4b^{2}\right)\times 4
Anything divided by -1 gives its opposite.
-\left(12a^{2}+\frac{8}{3}ab+16b^{2}\right)
Use the distributive property to multiply 3a^{2}+\frac{2}{3}ab+4b^{2} by 4.
-12a^{2}-\frac{8}{3}ab-16b^{2}
To find the opposite of 12a^{2}+\frac{8}{3}ab+16b^{2}, find the opposite of each term.
\frac{\frac{1}{3}a^{2}b^{2}\left(9a^{2}+2ab+12b^{2}\right)}{-\frac{1}{4}a^{2}b^{2}}
Factor the expressions that are not already factored.
\frac{\frac{1}{3}\left(9a^{2}+2ab+12b^{2}\right)}{-\frac{1}{4}}
Cancel out a^{2}b^{2} in both numerator and denominator.
\frac{3a^{2}+\frac{2}{3}ab+4b^{2}}{-\frac{1}{4}}
Expand the expression.
\frac{\left(3a^{2}+\frac{2}{3}ab+4b^{2}\right)\times 4}{-1}
Divide 3a^{2}+\frac{2}{3}ab+4b^{2} by -\frac{1}{4} by multiplying 3a^{2}+\frac{2}{3}ab+4b^{2} by the reciprocal of -\frac{1}{4}.
-\left(3a^{2}+\frac{2}{3}ab+4b^{2}\right)\times 4
Anything divided by -1 gives its opposite.
-\left(12a^{2}+\frac{8}{3}ab+16b^{2}\right)
Use the distributive property to multiply 3a^{2}+\frac{2}{3}ab+4b^{2} by 4.
-12a^{2}-\frac{8}{3}ab-16b^{2}
To find the opposite of 12a^{2}+\frac{8}{3}ab+16b^{2}, find the opposite of each term.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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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
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Limits
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