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Solve the quadratic equation by factoring. Check your solutions in the original equation. (Enter your answers as a comma-separated list.) $x^2 - 10x + 9 = 0$ x = 

          Solve the quadratic equation by factoring. Check your solutions in the original equation. (Enter your answers as a comma-separated list.)
$x^2 - 10x + 9 = 0$
x =
Solve the quadratic equation by factoring. Check your solutions in the original equation. (Enter your answers as a comma-separated list.) x^2 - 10x + 9 = 0 x =

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Precalculus with Limits
Precalculus with Limits
Ron Larson 2nd Edition
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Solve the quadratic equation by factoring. Check your solutions in the original equation. (Enter your answers as a comma-separated list.) x^2 - 10x + 9 = 0 x = Need Help? Solve the quadratic equation by factoring. Check your solutions in the original equation. (Enter your answers as a comma-separated list.) x^2 - 10x + 9 = 0 Need Help?
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Transcript

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00:01 So i'm like this to solve with a quadratic, it's best to use the quadratic formula.
00:05 So as a reminder, that's x is equal to negative b, plus or minus the square root of b squared minus 4ac divided by 2a.
00:14 So we start plugging in our numbers, so x is equal to, this is a, b is 1, b is 1, b is 1, plus or minus the square root of 1 squared minus 4 times a times b, all over 2 times a, or 12.
00:31 So the big thing that's going to happen here is inside that radical is going to be a negative number...
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