jsnsj
jsnsj
01-03-2017
Mathematics
contestada
How do you solve this
Respuesta :
Аноним
Аноним
01-03-2017
2x^2 - 9x + 16 = 6
2x^2 - 9x + 16 - 6 = 0
2x^2 - 9x + 10 = 0
(2x - 5)(x - 2) = 0
2x - 5 = 0
2x = 5
x = 5/2
x = 2.5
x - 2 = 0
x = 2
answer x = 2 and x = 2.5
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Аноним
Аноним
01-03-2017
Simple...
you have: [tex] 2x^{2} -9x+16=6[/tex]
To even begin, set all terms to the left side and set the parabola equal to zero-->>
[tex] 2x^{2} -9x+10[/tex]
Now, you can factor!
What multiplies to 20 and adds to -9?
-5*-4=20
-5+-4=-9
Then, using the box method...
x=[tex] \frac{5}{2} ,2[/tex]
Thus, your answer.
Answer Link
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