Which of the following equations has imaginary roots? x2 + 3x – 5= 0
22 – 7x + 10 = 0
2x2 – 3x + 1 = 0
22 +63 + 10 = 0

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.

Is a for each hour he works,his earnings go up by $4

Where are the options?