Evaluate
\left(x+7\right)\left(3x-y+4\right)
Expand
3x^{2}-xy+25x-7y+28
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3x^{2}+21x-yx-7y+4x+28
Apply the distributive property by multiplying each term of 3x-y+4 by each term of x+7.
3x^{2}+25x-yx-7y+28
Combine 21x and 4x to get 25x.
3x^{2}+21x-yx-7y+4x+28
Apply the distributive property by multiplying each term of 3x-y+4 by each term of x+7.
3x^{2}+25x-yx-7y+28
Combine 21x and 4x to get 25x.
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Limits
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