Question

factorise step by step:- r²-12r+36​

Answer 1

Answer:

r^2-12r+36

r^2-6r-6r+36

r(r-6)-6(r-6)

(r-6)(r-6)

Answer 2

Answer:

r =6

bcoz we neglect -6

Step-by-step explanation:

rsq.-6r-6r+36

=r(r-6)-6 (r+6)

(r+6) (r-6) =0

r+6=0 so we get r= -6

similarly

r-6=0then we get r=6