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lisov135 [29]
4 years ago
15

7x^2-16x-28=0, what’s the answer

Mathematics
1 answer:
slava [35]4 years ago
3 0
Answer:
The solutions of the equation are \frac{8+2 \sqrt{65} }{7} and \frac{8-2 \sqrt{65} }{7}

Explanation:
The general form of the quadratic equation is:
ax² + bx + c = 0
The given equation is:
7x² - 16x - 28 = 0

By comparing:
a = 7
b = -16
c = -28

Now, to get the roots, we will use the quadratic formula shown in the attached image.

Substitute with the values of a, b and c and calculate the corresponding roots.

You will get the roots:
\frac{8+2 \sqrt{65} }{7} and \frac{8-2 \sqrt{65} }{7}

Hope this helps :)

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