### Home > INT3 > Chapter Ch1 > Lesson 1.1.3 > Problem 1-47

1-47.

Although the Quadratic Formula always works as a strategy to solve quadratic equations, it is not always the most efficient method. For example, sometimes, a faster method is to factor and use the Zero Product Property. For each equation below, choose the method you think is most efficient to solve the equation. Homework Help ✎

*x*^{2}+ 7*x*– 8 = 0Note the expression in this equation can be factored.

(

*x*+ 2)^{2}= 49Notice that 49 is a perfect square.

5

*x*^{2}–*x*– 7 = 0Note the expression in this equation cannot be factored.

*x*^{2}+ 4*x*= –1Adding 4 to both sides will create a perfect square.