Question

(2r-2)(-r-7) show work

Answer 1

2r by −r to get −2r2.

(−2r2+2r⋅−7−2⋅−r−2⋅−7)


Multiply 2r by −7 to get −14r.

(−2r2−14r−2⋅−r−2⋅−7)


Multiply −2 by −r to get 2r.

(−2r2−14r+2r−2⋅−7)


Multiply −2 by −7 to get 14.

(−2r2−14r+2r+14)


Since −14r and 2r are like terms, subtract 2r from −14r to get −12r.

(−2r2−12r+14)


(−2r2−12r+14)

Remove the parentheses around the expression −2r2−12r+14.

−2r2−12r+14