5v^2 -- 30v + 40
Factoring polynomials

First let's factor a 5 from every term.

5v^2-30v+40

=5(v^2-6v+8)

The v^2-6x+8 can be further factored using the x method(as I call it, its not its official name of course), You can get

5(v^2-6v+8)

=5(v-2)(v-4)

Done! any questions just ask in the comment section.

180

step-by-step explanation:

12-2=10

20-2=18

18x10=180

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step-by-step explanation: