SOLUTION: Find two factors of 28 with a sum of 11.

Question 91796: Find two factors of 28 with a sum of 11.
Answer by mathispowerful(115) (Show Source): You can put this solution on YOUR website!
according to the problem:
assume the two factors are x and y
then x + y = 11
x*y = 28
a quadratic equation can be formed:
from the first equation y = 11 - x
substitute y:

or
solve this equation: (x -4)(x - 7) = 0
so x = 4 and x = 7
the corresponding y values are y =7 and y = 4.
The answer the two factors are 4 and 7.

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