Question 519056
this is like long division


5x goes into 5x^2 ___ x times


x times 5x-1 is ___ 5x^2-x


5x^2-16x minus 5x^2-x is ___ -15x


5x goes into -15x ___ -3 times


-3 times 5x-1 is ___ -15x+3


-15x minus -15x+3 is ___ -3 (this is the remainder)


so the answer is ___ (x-3)  R -3