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kati45 [8]
4 years ago
11

Please help..........

Mathematics
1 answer:
Nonamiya [84]4 years ago
8 0
1.
x^2-14x+45=0
(14/2)^2 =49
x^2-14x+49 +45=49
                    -45  -45
x^2-14x+49=4
(x-7)^2=4        square both sides
x-7=2         add 7 to both sides
x=9

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