A negative number multiplied by a negative number gives a positive product.
EXAMPLE : Find the value of (-3) x (-4)
-3 x (4 - 4) = -3 x 0 = 0....expanding the brackets gives
-3 x 4 + (-3) x (-4) = 0
-12 + (-3) x (-4) = 0
Therefore (-3) x (-4) = 12 which is a positive number
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If two numbers are multiplied and one of them is negative, the answer will turn out negative. If the two numbers being multiplied are either both negative or both positive, the answer will turn out positive. Example: -2 * 2 = -4 -2 * -2 = 4 2 * 2 = 4
When multiplying numbers with exponents, you add the exponents.
(-1)2=1 all squared numbers turn out positive and 12=1 (-1)2=1 all squared numbers turn out positive and 12=1
They can, but they are called imaginary numbers. This is because a "square" of something is the number that, when multiplied by itself, will equal the first number. A negative multiplied by a negative equals a positive, and positives can't turn into negatives on their own, so there are no square roots of negative numbers.
turn the positive number into its recipricol and the put the number of the negative number on the top