Question

x^2 - 21 x + 108.
please give the answer right
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Answer 1

Answer:

9

x

2

−21x+108=0

⇒x

2

−12x−9x+108=0

⇒(x−12)(x−9)=0

⇒x−12=0 OR x−9=0

⇒x=12 OR x=9