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3 years ago

Chứng minh: x² - 8x + 17 > 0

Mathematics

1 answer:

monitta3 years ago

8 0

Answer: All Real Numbers

x2−8x+17>0

x2−8x+17=0

For this equation: a=1, b=-8, c=17

1x2+−8x+17=0

−b±√b2−4ac

(Use quadratic formula with a=1, b=-8, c=17)

−(−8)±√(−8)2−4(1)(17)

2(1)

8±√−4

All real numbers

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