Use the zero product property to find the solutions to the equation x2 + x – 30 = 12. a. x = –7 or x = 6 b. x = –7 or x = –6 c. x = –6 or x = 7 d. x = 6 or x = 7

ANSWER



EXPLANATION

The given quadratic equation is


We add -12 to both sides of the equation to get,



We simplify to get,


We split the middle term to get,



We factor to obtain,





By the zero product property, we must have either


This implies that,

there are 96 wizards

step-by-step explanation:

20% of 120 is 24. if you subtract 24 from 120 you get 96