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30x^{2}-28x-98
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30x^{2}-28x-98
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40x^{2}-35x+56x-49+\left(5x+7\right)\left(-2x-7\right)
Apply the distributive property by multiplying each term of 5x+7 by each term of 8x-7.
40x^{2}+21x-49+\left(5x+7\right)\left(-2x-7\right)
Combine -35x and 56x to get 21x.
40x^{2}+21x-49-10x^{2}-35x-14x-49
Apply the distributive property by multiplying each term of 5x+7 by each term of -2x-7.
40x^{2}+21x-49-10x^{2}-49x-49
Combine -35x and -14x to get -49x.
30x^{2}+21x-49-49x-49
Combine 40x^{2} and -10x^{2} to get 30x^{2}.
30x^{2}-28x-49-49
Combine 21x and -49x to get -28x.
30x^{2}-28x-98
Subtract 49 from -49 to get -98.
40x^{2}-35x+56x-49+\left(5x+7\right)\left(-2x-7\right)
Apply the distributive property by multiplying each term of 5x+7 by each term of 8x-7.
40x^{2}+21x-49+\left(5x+7\right)\left(-2x-7\right)
Combine -35x and 56x to get 21x.
40x^{2}+21x-49-10x^{2}-35x-14x-49
Apply the distributive property by multiplying each term of 5x+7 by each term of -2x-7.
40x^{2}+21x-49-10x^{2}-49x-49
Combine -35x and -14x to get -49x.
30x^{2}+21x-49-49x-49
Combine 40x^{2} and -10x^{2} to get 30x^{2}.
30x^{2}-28x-49-49
Combine 21x and -49x to get -28x.
30x^{2}-28x-98
Subtract 49 from -49 to get -98.
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