nguyenthanhphucbp200 nguyenthanhphucbp200

16-09-2021
Mathematics

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chứng minh: x² - 8x + 17 > 0

Respuesta :

TheHelperOfHeck TheHelperOfHeck

16-09-2021

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

x=

−b±√b2−4ac

2a

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

x=

−(−8)±√(−8)2−4(1)(17)

2(1)

x=

8±√−4

2

All real numbers

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