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natulia [17]
3 years ago
11

Solve this quadratic equation using the quadratic formula. 2x 2 - 10x + 7 = 0

Mathematics
2 answers:
Artemon [7]3 years ago
8 0

Answer:

x₁ = <u>5 + √11</u>

         2

x₂ = <u>5 - √11</u>

          2

Step-by-step explanation:

quadratic formula is given by

x = <u>-b ±√b² - 4ac</u>

             2a

a = 2, b = -10, c = 7

x = <u>-(-10) ± √-10² - 4*2*7</u>

                  2*2

x = <u>10 ± √100 - 56</u>

           4  

x = <u>10 ± √44 </u>   = <u>2(5 ± √11)</u>  = <u>5 ± √11</u>

             4                   4               2

x₁ = <u>5 + √11</u>

           2

x₂ = <u>5 - √11</u>

           2

sladkih [1.3K]3 years ago
7 0

Answer:X=11/10

Step-by-step explanation:

2x2-10x+7=0

<u><em>4</em></u>-10x+<u><em>7</em></u>=0

11-10x=0

-10x= -11

Divide both side by -10

-10x/-10.  -11/-10

Answer= 11/10

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