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natita [175]
3 years ago
7

I need help with this math problem please

Mathematics
2 answers:
liraira [26]3 years ago
8 0
It’s D

have a great day!

photo attached below :)

nikdorinn [45]3 years ago
8 0

Answer:

option D

Step-by-step explanation:

9x^2 + 6x - 17 = 0 , \ where \ a = 9 \ , \ b = 6  \ , c = - 17

x = \frac{ - b \ \pm \sqrt{b^2  - 4ac}}{2a} \\\\x = \frac{-6 \pm \sqrt{36 - (4 \times 9 \times -17)}}{2 \times 9}\\\\x = \frac{-6 \pm \sqrt{ 36 + 612}}{18}\\\\x = \frac{-6 \pm \sqrt{ 648}}{18}\\\\x = \frac{-6 \pm \sqrt{ 2^3 \times 3^4}}{18}\\\\x = \frac{-6 \pm \sqrt{2 \times 2^2 \times 3^ 4 }}{18}\\\\x = \frac{-6 \pm ( 2 \times 9 )\sqrt{ 2}}{18}\\\\x = \frac{-6 \pm 18\sqrt{2}}{18}\\\\x = \frac{-1 \pm 3 \sqrt{ 2}}{3}

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