B.Fill in the missing term, making a perfect trinomial square: 21. 36- – InterviewSolution

1.

B.Fill in the missing term, making a perfect trinomial square: 21. 36-12r+r^2

Answer»

36-12r+r²

r²-12r+36

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

(r-6),(r-6)

r=6

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