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gtnhenbr [62]
3 years ago
15

How to solve this equation 6x^2-2x+5+2x^2-7x-11

Mathematics
1 answer:
postnew [5]3 years ago
6 0

x= \frac{9+\sqrt{273} }{16}

OR

x= \frac{9-\sqrt{273} }{16}

Step-by-step explanation:

The given equation is

6x^{2}-2x+5+2x^{2}-7x-11

<u>Step 1: Arrange the equation</u>

6x^{2}+2x^{2}-2x-7x-11+5

<u>Step 2: Simplify the equation</u>

8x^{2}-9x-6

<u>Step 3: Identify a,b,c in the equation</u>

a=8

b=-9

c=-6

<u>Step 4: Apply quadratic formula to find the possible values of x</u>

x = \frac{-b±\sqrt{b^{2}-4ac } }{2a}

x= \frac{-(-9)±\sqrt{(-9)^{2}-4(8)(-6) } }{2(8)}

x= \frac{9+\sqrt{273} }{16}

OR

x= \frac{9-\sqrt{273} }{16}

Keyword: Equation

Learn more about equations at

  • brainly.com/question/4460262
  • brainly.com/question/8955867

#LearnwithBrainly

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seropon [69]

It doesn't, it ends after 32 digits after 0.

5 0
3 years ago
The second digit of a four digit number is "0". If you write the digits of this number backwards, you will get a number 9 times
wolverine [178]

Answer:

1089

Step-by-step explanation:

The original number is A0CD, We have that DC0A = 9 x A0CD.

If A =1, then D = 9 and we have:

9C01 = 9 x 10C9

In order for this expression to be true, the following must also be true:

(C x 9) + 8 must be divisible by 10, which means that C x 9 must end in a 2.

The only multiple of 9 (from 9 to 81) that ends in a 2 is 72.

72 = 9 x 8.

Therefore, C must be 8 and the original number is 1089. Multiply it by 9 to check the answer:

1089 x 9 = 9,081

Therefore, 1089 is correct.

6 0
3 years ago
What is a equivalent expression for 4(x-2)
sweet-ann [11.9K]
Ig HD kbcoudy kvyshgsy bc b hygyxfj
3 0
2 years ago
Someone please help!! I’ll give brainliest!
snow_lady [41]

Answer:

1766.3

Step-by-step explanation:

V=4 /3πr^3

= 4/3(3.14)(7.5)^3

= 4/3(3.14)(421.88)

= 4/3(1324.69)

= 1766.25

= 1766.3

I hope this is right!

3 0
2 years ago
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Figure it out tonta tonta
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