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# What is 25 raised to the negative 3/2 power? (answer)

Hi Martin, An exponent of the form 1/n for a number n is taken to mean taking the nth root of the number. In this case, we're just working with n=2, which means a square root and should be familiar to you. 253/2 can be easily rewritten by taking the square root first. I'd rather not deal...

# WHT IS NEGATIVE 4 EXPONENT 4 (answer)

In the case that you mean (-4)4, it can be written out as (-4)(-4)(-4)(-4). Since multiplying two negatives gives a positive, this is equal to 16*16 = 256. More generally, (-x)n for x positive and n even will always yield a positive answer. If you mean to write -(44), the negative would stay...

Hey Christine, Just like regular old fractions, we want to find a common denominator for these guys. Let's multiply the 1/x by 1, but let's express 1 as x/x. (x/x)(1/x) + 1/x2 Multiplying that out, we get x/x2 + 1/x2 Now that we've found the common denominator, we can add...

# the sum of the square of a positive number and the square of 5 more than the number is 157. what is the number? (answer)

Answering! Was just making sure I could actually post because it was giving me trouble the other day. Editing now.