3 years ago

Please help me answer this

Mathematics

1 answer:

jonny [76]3 years ago

4 0

The answer is 112 im pretty sure!

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Solutions for 2x^2+18x=20, worth a TON, please only 100% answers ! Thank u !

victus00 [196]

Answer:

The solution of the given quadratic equation is 1 and (-10).

Step-by-step explanation:

$2x^2+18x=20$

$x^2+9x=\frac{20}{2}$

$x^2+9x-10=0$

$ax^2+bx+c=0$

Solving equation by quadratic formula:

Here , a = 1,b = 9, c = (-10)

$D=b^2-4ac=(9)^2-4(1)(-10)=121$

$x=\frac{-b+{\sqrt{D}}}{2a}=\frac{(-9)+\sqrt{121}}{2(1)}=1$

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The solution of the given quadratic equation is 1 and (-10).

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Korvikt [17]

I think the answer is r< 18

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Please help me answer this ​

Please help me answer this