Solve for x
x=-1
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3x+5x+15=7
Use the distributive property to multiply 5 by x+3.
8x+15=7
Combine 3x and 5x to get 8x.
8x=7-15
Subtract 15 from both sides.
8x=-8
Subtract 15 from 7 to get -8.
x=\frac{-8}{8}
Divide both sides by 8.
x=-1
Divide -8 by 8 to get -1.
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\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
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Limits
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