today's temperature is supposed to be 5°c warmer than yesterday. if yesterdays tempeture was -10°c what is today's temperature supposed to be?

First step is to get rid of the square root. remember that a square root is the same as raising to the (1/2) power. see below: multiply exponents per exponent rules to get: remember you subtract exponents from the denominator and add exponents in the numerator so: simplify further: so a is the correct choice. if you don't understand this google exponent rules and it will you understand. look at the image results.

1.) 18+5 is one way i’m pretty sure there are others but i can’t think of them right now