Factor out it by 2. 2(b² - 13b + 40) = 0 b<span>²</span> - 13b + 40 =0 This equation can be solved using the quadratic formula. If you know what a quadratic formula is, then you can get the two values for b. For instance, (b - 8)(b - 5) = 0
Separate the two "roots", you will get: b - 8 = 0 b = 8 and b - 5 = 0 b = 5
