Exercise 6 Page 56

Notice that both sides of the equation contain a 7. Therefore, if we subtract 7 from both sides, we end up with an equivalent equation but without a constant. This can be solved by the Zero Product Property like we did in Part A.

Like in Part B, we can solve this with the Zero Product Property if we first eliminate the constant from both sides.

Like in Parts B and C, we can solve this equation with the Zero Product Property if we first eliminate the constant from both sides.

Graphically, the solutions to a quadratic expression set equal to zero are its x-intercepts. Since all of the quadratic equations are without a constant, this means they intercept the y-axis at the origin, which also constitutes one of the x-intercepts.