Why does a positive times a negative produces a negative?
Because when there is a positive and a negative in the same problem, it gives you a negative. An easy way to solve problems like that is if there is an odd number of negative signs, then your answer is going to be negative. If there is an even number of negative signs, then your answer is going to be positive. (no matter if there is a positive sign in a math problem).
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Here is a proof. Let a and b be any two real numbers. Consider the number x defined as x = ab + (-a)(b) + (-a)(-b). We can write this out differently as x = ab + (-a)[… (b) + (-b) ] Then, by factoring out -a , we find that x= ab + (-a)(0) = ab + 0 = ab. Also, x = [ a + (-a) ]b + (-a)(-b) And by factoring out b, we find that x=0 * b + (-a)(-b) = 0 + (-a)(-b) = (-a)(-b). Therefore x = ab and x = (-a)(-b) Then, by the transitivity of equality, we have ab = (-a)(-b).
A negative times a positive is a negative.
ITS NOT! example, -2 + -4 = -6 not a negative! Never Never Never Jonah!! hi. actually, if you notice, the person above says tht -2+(-4)=-6. -6 is a sum, NOT a pr…oduct. as an answer to your question, the negatives cancel each other out and leave the number all by itself. i think that's it. -2 + -4 is not a CORRECT sum. you need to take out the positive sign when you have a positive and negative next to eachoter and complete the sum as it is -2-4=-6
the thing is that when there are two negatives you need to cross out those which will give positive times positive equals positive. this is the rule that you need to learn it.… negative*negative=positive positive*positive=positive negative*positive=negative The same thing for devision
that a dump question
Negative times negative is always a positive.
Think of it like this: . The product of a negative number times a number (call it B ), will be the opposite sign of the sign of number B . . The product of a posi…tive number times a number B , will have the same sign as the sign of number B .
No - it results in a negative number.
A + O X A - O Would have to be the genotype to yield 1/4 probability of any type O, as O is recessive and only expresses in homozygous condition.
It will be a negative.
think of it like this a negative times a positive don't go together in a relationship they have to have the same attitude
A negative times a negative times a negative (N x N x N) is a : Negative!!! Negative times a negative is positive. A positive times a negative is a negative. Remember i…f you are multiplying an odd number of negatives irrespective of the number of positives, it is always a negative. If you are multiplying an even number of negatives then the answer is a positive. EX: -2 x -1 x -2 ( 3 negatives so answer is negative) 2 x -2 -4 -3x-5x-1x-1x2x1 ( 4 negatives so answer is positive) 15x1x2 30