Pre-Calculus, 9th edition
29

 PAGE: 767 SET: Exercises PROBLEM: 29

The system is

Solve the system by using substitution method.

The equations

Solve the equation for .

Substitute in equation .

Solve the above equation for .

Take out common factors.

Apply zero product property.

and

and .

Substitute the values in either of two equations.

Substitute equation .

Substitute equation .

Solutions of the system is , and , .

Check:

Substitute the values and in equation .

Above statement is true.

and is a solution.

Substitute the values and in equation .

Above statement is true.

and is a solution.

Solutions of the system is and .

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