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40-51x-30x^{2}
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40-51x-30x^{2}
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-42x^{2}-49x+30x+35+\left(-6x+1\right)\left(-2x+5\right)
Apply the distributive property by multiplying each term of 7x-5 by each term of -6x-7.
-42x^{2}-19x+35+\left(-6x+1\right)\left(-2x+5\right)
Combine -49x and 30x to get -19x.
-42x^{2}-19x+35+12x^{2}-30x-2x+5
Apply the distributive property by multiplying each term of -6x+1 by each term of -2x+5.
-42x^{2}-19x+35+12x^{2}-32x+5
Combine -30x and -2x to get -32x.
-30x^{2}-19x+35-32x+5
Combine -42x^{2} and 12x^{2} to get -30x^{2}.
-30x^{2}-51x+35+5
Combine -19x and -32x to get -51x.
-30x^{2}-51x+40
Add 35 and 5 to get 40.
-42x^{2}-49x+30x+35+\left(-6x+1\right)\left(-2x+5\right)
Apply the distributive property by multiplying each term of 7x-5 by each term of -6x-7.
-42x^{2}-19x+35+\left(-6x+1\right)\left(-2x+5\right)
Combine -49x and 30x to get -19x.
-42x^{2}-19x+35+12x^{2}-30x-2x+5
Apply the distributive property by multiplying each term of -6x+1 by each term of -2x+5.
-42x^{2}-19x+35+12x^{2}-32x+5
Combine -30x and -2x to get -32x.
-30x^{2}-19x+35-32x+5
Combine -42x^{2} and 12x^{2} to get -30x^{2}.
-30x^{2}-51x+35+5
Combine -19x and -32x to get -51x.
-30x^{2}-51x+40
Add 35 and 5 to get 40.
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