Final answer to the problem
$\left(-4+x\right)\left(x+1\right)$
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Step-by-step Solution
Specify the solving method
1
Solve the product $-\left(4-x\right)\left(x+1\right)$
$\left(-4-\left(-1\right)x\right)\left(x+1\right)$
2
Multiply $-1$ times $-1$
$\left(-4+x\right)\left(x+1\right)$
Final answer to the problem
$\left(-4+x\right)\left(x+1\right)$