Evaluate
-30
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-30
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\left(-10+3\right)\left(3\left(-1\right)-7\right)-\left(3\left(-1\right)-7\right)^{2}
Multiply 10 and -1 to get -10.
-7\left(3\left(-1\right)-7\right)-\left(3\left(-1\right)-7\right)^{2}
Add -10 and 3 to get -7.
-7\left(-3-7\right)-\left(3\left(-1\right)-7\right)^{2}
Multiply 3 and -1 to get -3.
-7\left(-10\right)-\left(3\left(-1\right)-7\right)^{2}
Subtract 7 from -3 to get -10.
70-\left(3\left(-1\right)-7\right)^{2}
Multiply -7 and -10 to get 70.
70-\left(-3-7\right)^{2}
Multiply 3 and -1 to get -3.
70-\left(-10\right)^{2}
Subtract 7 from -3 to get -10.
70-100
Calculate -10 to the power of 2 and get 100.
-30
Subtract 100 from 70 to get -30.
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