Evaluate
15-4x-x^{2}
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15-4x-x^{2}
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3x^{2}-\left(4x^{2}+4x-15\right)
Use the distributive property to multiply 2x-3 by 2x+5 and combine like terms.
3x^{2}-4x^{2}-4x+15
To find the opposite of 4x^{2}+4x-15, find the opposite of each term.
-x^{2}-4x+15
Combine 3x^{2} and -4x^{2} to get -x^{2}.
3x^{2}-\left(4x^{2}+4x-15\right)
Use the distributive property to multiply 2x-3 by 2x+5 and combine like terms.
3x^{2}-4x^{2}-4x+15
To find the opposite of 4x^{2}+4x-15, find the opposite of each term.
-x^{2}-4x+15
Combine 3x^{2} and -4x^{2} to get -x^{2}.
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\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
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Limits
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