Question

(3r-3) (r-3)=72
how to solve it​

Answer 1

Step-by-step explanation:

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Answer 2

Answer:

3r(r-3) -3(r-3)=72

3r^2-9r-3r+9=72

3r^2-9r-3r=72-9

r^2-6r=63/3

r^2-r=12

r=12