Factor 5 5 out of 5 x 2 5 x 2 . 5 ( x 2 ) + 15 x − 10 5 ( x 2 ) + 15 x - 10 Factor 5 5 out of 15 x 15 x . 5 ( x 2 ) + 5 ( 3 x ) − 10 5 ( x 2 ) + 5 ( 3 x ) - 10 Factor 5 5 out of − 10 - 10 . 5 x 2 + 5 ( 3 x ) + 5 ⋅ − 2 5 x 2 + 5 ( 3 x ) + 5 ⋅ - 2 Factor 5 5 out of 5 x 2 + 5 ( 3 x ) 5 x 2 + 5 ( 3 x ) . 5 ( x 2 + 3 x ) + 5 ⋅ − 2 5 ( x 2 + 3 x ) + 5 ⋅ - 2 Factor 5 5 out of 5 ( x 2 + 3 x ) + 5 ⋅ − 2 5 ( x 2 + 3 x ) + 5 ⋅ - 2 . 5 ( x 2 + 3 x − 2 )