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TiliK225 [7]
3 years ago
15

If 2x^2+2x=12, what is x?

Mathematics
2 answers:
Rainbow [258]3 years ago
5 0

Answer:

x= 2

x= -3

Step-by-step explanation:

<u>Solving as normal quadratic equation:</u>

  • 2x^2+2x=12
  • x^2 +x = 6
  • x^2 + x - 6= 0
  • x = (-1 ± √(1+4*1*6)/2
  • x = ( - 1 ± √25)/2
  • x = (-1 ± 5)/2
  • x= 2
  • x= -3

<u>Roots are</u> 2 and -3

Ber [7]3 years ago
3 0

Answer:

<h3>x = - 3 or x = 2</h3>

Step-by-step explanation:

2x² + 2x - 12 = 0

Divide all the terms by 2 to simplify the terms

That's

x² + x - 6 = 0

<u>Write x as a difference</u>

That's

x² + 3x - 2x - 6 = 0

<u>Factor x out of the equation</u>

That's

x( x + 3) - 2x - 6 = 0

<u>Factor out - 2 from the expression</u>

x(x + 3) - 2( x + 3) = 0

<u>Factor out x + 3 from the expression</u>

That's

( x + 3)(x - 2) = 0

<h3>x + 3 = 0 x - 2 = 0</h3>

<h3>x = - 3 x = 2</h3>

Hope this helps you

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CAN ANYBODY PLS HELP
Firdavs [7]

The correct options are

5x =  - 58 \:5x + 4 =  - 54

<h3>How to find same value of x?</h3>

given that

\frac{5}{6} x +  \frac{2}{3}  =  - 9

first find value of x to obtain the equations have the same value of x.

Find the L.C.M between the 6,3

\frac{5x + 4}{6}  =  - 9

Then Cross multiplication should be done

5x + 4 =  - 9 \times 6 \\ 5x + 4 =  - 54 \\ 5x =  - 54 - 4

5x =  - 58

Hence the correct options are

5x =  - 58

5x + 4 =  - 54

Learn more about problems on equations, refer:

https://brainly.in/question/742266

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7 0
1 year ago
Five point six times four point eight
LenaWriter [7]

Answer:

26.88

Step-by-step explanation:start eight times four is 32

and than eight times six is 48 than add a zero and do four times six is 24

and four times five is twenty add it up and line up the decimal points

hope i helped !!

3 0
3 years ago
Convert 1.4x10^-8 to standard notation/long form​
andriy [413]

Answer:

0.000000014

Step-by-step explanation:

1.4 × 10^{-8} = \frac{1.4}{10^8 = 100000000} = 0.000000014

6 0
2 years ago
Consider two circular swimming pools. Pool A has a radius of 34 feet, and Pool B has a diameter of 20.92 meters. Complete the de
77julia77 [94]

Answer:

The diameter of pool a is 10.37 (34 × 0.305)

Pool B is greater

The circumference of pool B is greater

The area of pool B is 65.7221183130984ft

The area of pool a is

32.5783158177261ft

65.7221183130984 - 32.5783158177261=

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3 years ago
Keith thinks of a number. When he multiples the number by 6 and subtracts 19.85 from the product, he gets 29.77. Find the number
kirill115 [55]

let the number be X

6x-19.85=29.77

6x=29.77+19.85

6x=49.62

x=8.27

Hope that helps :)

-Asmaa Ghazzawi

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3 years ago
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