Question 260355
Here is the original equation:
(i){{{r^2-10=3r}}}
step 1 - set = 0.
(ii) {{{r^2-3r - 10 = 0}}}
step 2 - factor to get
(iii) {{{(r-5)(r+2)=0}}}
step 3 solve each parenthesis for r to get
r-5 = 0
r = 5
r+2 = 0
r = -2