**Find the number of real number solutions for the equation. x^2 + 9x + 20 = 0**

**Answer:**

Quick way of solving a few quadratic equations:

(x+a)(x+b)= x^2+ (a+b)x+ (ab)

In this case, a=4, b=5

Giving: (x+4)(x+5)

x+4=0, x= -4

x+5 =0, x= -5

**Find the number of real number solutions for the equation. x^2 + 9x + 20 = 0**

**Answer:**

Quick way of solving a few quadratic equations:

(x+a)(x+b)= x^2+ (a+b)x+ (ab)

In this case, a=4, b=5

Giving: (x+4)(x+5)

x+4=0, x= -4

x+5 =0, x= -5