Find the sum of the interior angle measures of the polygon :>

Which expression can be used to determine the slope of the line that passes through the points -6, three and one, -9

Me! i will mark brainliest! i don't get polynomials and all that other stuff. so this question is really hard. multiply and simplify.(x - 4) (x^2 – 5x – 6)show your

Solve the following: 12(x^2–x–1)+13(x^2–x–1)=25(x^2–x–1) 364x–64x=300x