Question 1: find the solution to the system of equations below by substituting y+8x=19
2y-14x=-22

Solution:

Finished early? Check your work by plugging your solution into both equations in the space below.

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.