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Grace [21]
3 years ago
5

Hello, please I bed urgent help with this math problem please

Mathematics
2 answers:
loris [4]3 years ago
4 0

Answer:

option C

Step-by-step explanation:

4c^2 + 7c  - 5 = 0 , \ where \ a = 4 , \ b = 7 , \ x = - 5

c = \frac{- b \pm \sqrt{b^2 - 4ax }}{2a} \\\\c = \frac{- 7 \pm \sqrt{49 - ( 4 \times 4 \times - 5 )}}{2 \times 4} \\\\c = \frac{- 7 \pm \sqrt{49  + 80}}{8} \\\\c = \frac{- 7 \pm \sqrt{49  + 80}}{8} \\\\c = \frac{- 7 \pm \sqrt{129}}{8} \\\\

Mashcka [7]3 years ago
3 0

Answer:

Option C

Step-by-step explanation:

Quadratic formula:

4c^{2} +7c-5=0

a=4\\b=7\\x=-5

c=\frac{-b\frac{+}{} \sqrt{b^2-4ax}}{2a}

c=\frac{-7\frac{+}{}49-(4*4*-5) }{2*4}

c=\frac{-7\frac{+}{}\sqrt{129}  }{8}

<em>hope this helps....</em>

<em />

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