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tyrickdavis1
10.12.2019 •
Mathematics
What value is the positive solution of 5= 8 + 2x - x²
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Ответ:
So, because there is an
5 - 8 - 2x +
-2x +
(x - 3) (x + 1)............................................Factor -2x +
===================================================================
How to Factor:
-2x +
Ask which two numbers add up to equal -2 and multiply to equal -3
(-3 and 1)
Not just put the in a parenthesis with an x in front: (x - 3) (x + 1)
To check this multiply the parenthesis together by using the FOIL method and you will end up with -2x +
===================================================================
Now that that is factored, all we do now is set each parenthesis to equal 0 and solve for x:
x - 3 = 0
x = 3
x + 1 =0
x = -1
Now our question asks us for the positive solution, which is 3.
Thank you for the question! I hope this helped!! Have an amazing day! :)
Ответ:
Your brother read 320 books