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Usimov [2.4K]
3 years ago
11

Solve the quadratic linear below :6x²-x-2=0​

Mathematics
2 answers:
Advocard [28]3 years ago
6 0

Answer:

x = 3/2; x = -1/2

Step-by-step explanation:

6x² - x - 2 = 0

⇔ 6x² - 4x + 3x - 2 = 0

⇔ (6x² - 4x) + (3x - 2) = 0

⇔ 2x(3x - 2) + (3x - 2) = 0

⇔ (3x - 2)(2x + 1) = 0

⇔\left \{ {{3x - 2=0} \atop {2x + 1=0}} \right.

⇔\left \{ {{3x=2} \atop {2x=-1}} \right.

⇔\left \{ {{x=2/3} \atop {x=-1/2}} \right.

Luda [366]3 years ago
5 0

Answer:

x 1=  \frac{ + 1 +  \sqrt{  { (- 1)}^{2}  - 4 \times 6 \times ( - 2)}  }{ 12} =  \frac{8}{12}  \\ x =  \frac{ + 1  -   \sqrt{  { (- 1)}^{2}  - 4 \times 6 \times ( - 2)}  }{ 12} =  \frac{ - 6}{12}

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NEED HELP IN FINDING AREA
Aliun [14]

Answer:

809 km²

Step-by-step explanation:

I can split this into 3 rectangles. One is 25 by 17, another is 24 by 13, and the last one is 6 by 12. (I had gotten 13 for the second rectangle because 25 - 12 = 13.)

(25 * 17) + (24 * 13) + (6 * 12) <em>{17 is the first number after a multiple of 4 (16). As a result, 25 by 17 will end in "25." 25 by 17 is 425.}</em>

425 + (24 * 13) + (6 * 12) <em>{24 by 13 is 312.}</em>

425 + 312 + (6 * 12) <em>{6 by 12 is 72.}</em>

425 + 312 + 72 <em>{From left to right, add 425, 312, and 72 to get 809}</em>

737 + 72

809 km²

The area of this figure is 809 km².

5 0
3 years ago
I am stuck on this question it was can you add 4+2x to get 6x
Fed [463]

Answer:

No you can't.

Step-by-step explanation:

4 is an integer, and 2x isn't so you can't add them together. If 4 was 4x or 2x was 2, then you'd get 6, but you can't add them. Hope this helps :)

5 0
2 years ago
Can you teach me how to do, 3ax+2b/c = 4b? Please
Brums [2.3K]
I Also nenes help doing thank
5 0
3 years ago
Read 2 more answers
How many roots does the equation 3x² = 1 - 7x have and what is the nature of the roots
AnnyKZ [126]

Answer:

Step-by-step explanation:

Rewrite this quadratic in standard form:  3x^2 + 7x - 1.

The coefficients of x are {3, 7, -1}, and so the discriminant is b^2 - 4ac, or

7^2 - 4(3)(-1), or 49 + 12, or 61.  Because the discriminant is positive, this quadratic has two real, unequal roots

7 0
3 years ago
Solve the equation f/3+22=17
andrezito [222]
1) f/3 + 22 = 17

2) f/3 + 22 - 22 = 17 - 22

= f/3 = -5

3) 3 • f/3 = 3(-5)

= f = 3(-5)

= f = -15

Your answer would be f = -15

:)
4 0
3 years ago
Read 2 more answers
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