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irga5000 [103]
3 years ago
8

Please solve this equations y=6x²-5,y=17x-6/x​

Mathematics
1 answer:
Amiraneli [1.4K]3 years ago
5 0

Answer:

x=3, y = 49\\x=0.5, y = -3.5\\x=-0.67, y = -2.31

Step-by-step explanation:

y=6x^2-5\\y=17x-\frac{6}{x}

Let's substitute the first equation into the second one.

6x^2-5=17x-\frac{6}{x}

6x^3-17x^2-5x+6=0 - Multiply by x and bring all the terms to one side.

I'll use my graphical calculator to solve this but you could factor:

x=3\\x=0.5\\x=-0.67 (All rounded to 2 decimal places)

Now we can substitute these x values into an equation for y.

y=6x^2 - 5

x=3, y = 49\\x=0.5, y = -3.5\\x=-0.67, y = -2.31

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Step-by-step explanation

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