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Remember that a negative multiplied by a negative is a positive.
Factors of 24: 1 and 24----- 2 and 12------ 3 and 8------ 4 and 6..
the negatives also work so: -1 and -24---- -2 and -12----- -3and -8----- -4 and -6
If we add each one we get : -25...............-14................ -11.............. -10
therefore -8 and -3 are factors of 24 and sum up to make -11
3 & 8
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31
List numbers that multiply to make 28 and find their sums. Since negative times a negative is positive, list the negatives. -1, -28 = -29 -2, -14 = -15 -4, -7 = -11 Aha! -4 and -7 multiply to make 28 and add to -11; therefore, -4 and -7 are the two numbers.
Since both numbers have the same sign, you add them. -11 (negative 11) is the answer.
3 & 8
two negatives make a larger negative -9+ -2= -11 -4+ -34= -38
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31
Factors multiply, like 1 x 11. Addends add, like 5 and 6.
List numbers that multiply to make 28 and find their sums. Since negative times a negative is positive, list the negatives. -1, -28 = -29 -2, -14 = -15 -4, -7 = -11 Aha! -4 and -7 multiply to make 28 and add to -11; therefore, -4 and -7 are the two numbers.
no 11 is not a perfect number because when u add the factors the don't add up to 11
Factors are multiplied, not added. The question needs to be something like, "Which two factors of thirty add up to 11?" The answer would then be 5 and 6.
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Since both numbers have the same sign, you add them. -11 (negative 11) is the answer.
When the "factors" of a number are listed, the list is usually restricted to positive factors. Then there would be no answer to the question, because no group of positive numbers can add up to make zero.
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