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You should look for two numbers whose product is 40, and whose sum is 13. Experimenting a little (trying different pairs of factors for 40), you can quickly realize that this works for 8 and 5. Therefore,
x2 + 13x + 40 = (x + 8) (x + 5)
that would be 8 and 5
If you want to use the quadratic equation to solve it instead of factoring, the equation is x = (-b + or - the square root of (b2- 4ac))/2a
a in this case is 1, b is 13, and c is 40
So, plug a, b, and c into the above equation and do it once with adding and once with subtracting. There will be two x values given if you do it both times, 8 and 5.
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What equation can equal 14 and 40?
A quadratic equation in the form of: x2-54x+560 = 0 whose solutions are x = 14 and x = 40
What is the quadratic for x2-13x plus 40?
Assume this quadratic equation equals zero. Then :-x2 - 13x + 40 = 0, this can be factored (x - 8)(x - 5) = 0This holds true when either x - 8 = 0 or x - 5 = 0When x - 8 = 0 then x = 8 : When x - 5 = 0 then x = 5
Solve this equation -9h - 6 plus 12h plus 40 equals 22?
The solution to this equation is that h is equal to -4. You can substitute this value for h into the equation to get -4 x -9 - 6 plus 12 x -4 plus 40 equals 22, or 36 - 6 plus - 48 plus 40 equals 22.
How do you completely factor 20w2 plus 100w plus 40?
Divide all terms by their GCF which is 20 and so w^2+5w+2 which when factored is (m+4.5616)(m+0.4384) to four decimal places A more accurate answer can be found by using the quadratic equation formula
What is the quadratic equation for x2 13x plus 40?
Unfortunately, limitations of the browser used by Answers.com means that we cannot see most symbols. It is therefore impossible to give a proper answer to your question. Please resubmit your question spelling out the symbols as "plus", "minus", "equals". There is no symbol before 13x.
