Big Ideas Math Algebra 2, 2014
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Big Ideas Math Algebra 2, 2014 View details
Chapter Test
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Exercise 8 Page 151

We want to solve the given system of equations. Because we can easily isolate the variable in both equations, we will use the Substitution Method.
Note that neither of the variables is isolated in either equation, so we need to start by isolating in Equation II.
The variable is now isolated in Equation (II). This allows us to substitute its value for in Equation (I).
Simplify
Notice that in Equation (I), we have a quadratic equation in terms of only the variable.