Please factor this expression:
-8+40*x+(-1+5*x)*(1-7*x)
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Instructions

You need to factor the sum given to you, and make it a product.

Example

8-72*x+(1-9*x)*(3-3*x)=(1-9*x)*(3*x+3+8)=(1-9*x)*(3*x+3+8)=(1-9*x)*(3*x+11).