How can you rewrite 12
−
− (-5) as an addition problem?

They sought new allies to germany tried to get mexico to join and put pressure on the us. the us joined the allies because of the lucitania

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.