Each person eats 2/3 of a pound of turkey. how many pounds of turkey will be needed for 8 people
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if we have a number like say hmm 4, and we say hmmm √4 is ±2, it simply means, that if we multiply that number twice by itself, we get what's inside the root, we get the 4, so (+2)(+2) = 4, and (-2)(-2) = 4, recall that <u>minus times minus = plus</u>.
so, any when we're referring to even roots like , the positive number, that can multiply itself an even amount of times, will produce a valid value, BUT the negative number that multiply itself an even amount of times, will also produce a valid value.
now, that's is not true for odd roots like , because the multiplication of the negative number will not produce a valid value, let's put two examples on that.
so, when the root is an odd root, you will always get only one number that will produce the radicand.