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Alex_Xolod [135]
3 years ago
6

Solve for x in the equation 2 x squared minus 5 x + 1 = 3.

Mathematics
2 answers:
r-ruslan [8.4K]3 years ago
6 0

Answer:

x=-0.35 or x=2.85

Step-by-step explanation:

2x^2-5x+1=3

2x^2-5x-2=0

use quadratic formula

x=(5±√41)/4

decimals = x=-0.35 or x=2.85

Ilia_Sergeevich [38]3 years ago
3 0

Answer:

answer is D on edge

Step-by-step explanation:

just did the test and struggled to find this answer

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Find the values of x and y for which the lines are parallel.
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The answer:  " x = 68, y = 72 " .
____________________________
Explanation:
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46 + (x - 3) + (y - 3) = 180 .

46 + 1(x - 3) + 1(y-3) = 180 .

46 + 1x - 3 + 1y - 3 = 180 .

46 - 3 - 3 + 1x + 1y = 180 .

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Subtract "40" from EACH SIDE of the equation:
______________________________________
 40 + x + y - 40 = 180 - 40 ;

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x + y = 140 ;
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Now:
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65 = (x - 3) ;


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Add "3" to EACH SIDE of the equation;

    x - 3 + 3 = 65 + 3 ;

to get:
 
           x = 68 .
______________________________
Now:

Since:  "x + y = 140" ;

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   x + y = 140 ;
 
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↔ y + 68 = 140 ;

Subtract "68" from EACH SIDE of the equation; to isolate "y" on one side of the equation; and to solve for "y" ;
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So,  solve for "x" and "y".

x = 68, y = 72 .
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\large\boxed{x\in[-5,\ \infty)}

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