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Ede4ka [16]
3 years ago
10

Solve x^2 - x = 2 using the quadratic formula. Show your work.

Mathematics
1 answer:
lesya [120]3 years ago
8 0
The quadratic formula is the result of completing the square for ax^2+bx+c=0 when a,b, and c are unknown values.  This result is:

x=(-b±√(b^2-4ac))/(2a), we have x^2-x-2=0 so

x=(1±√(1+8))/2

x=(1±√9)/2

x=(1±3)/2

x=-1 and 2
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3 years ago
How to solve for 6x-12+2x=3+8x-15
Alecsey [184]
6x−12+2x=3+8x−15

Simplify:

6x+−12+2x=3+8x+−15

(6x+2x)+(−12)=(8x)+(3+−15)(Combine Like Terms)

8x+−12=8x+−12


8x−12=8x−12

Subtract 8x from both sides.

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Add 12 to both sides.

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4 0
3 years ago
HEEEEELLLLPPP ME!!!!!!!!!!!!!!!!!!!!<br> Evaluate u + xy, for u = 2, x = 9, and y = 6.
labwork [276]
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5 0
3 years ago
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Identify all of the following solutions of (square root of x+8)-6 =X
seropon [69]
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square root (x + 8)  = x -6
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8 0
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Answer:

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Step-by-step explanation:

2:5

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