Expand
4x^{2}+5x-21
Evaluate
\left(4x-7\right)\left(x+3\right)
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4x^{2}+12x-7x-21
Apply the distributive property by multiplying each term of 4x-7 by each term of x+3.
4x^{2}+5x-21
Combine 12x and -7x to get 5x.
4x^{2}+12x-7x-21
Apply the distributive property by multiplying each term of 4x-7 by each term of x+3.
4x^{2}+5x-21
Combine 12x and -7x to get 5x.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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Matrix
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\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
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Limits
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