The study clix only showed some of the formulas... But if a long question pops up, i don't get it.
Heres the question, can you solve it for me?
A positive number is squared and three times the number is then added. The result is 88. Find the number.
can you take it from here?
I find putting it down in words first helps me out. Think about what EXACTLY they're asking. If you have a number and you multiply it by itself (ie; squaring it) and then add on your starting number 3 times you'll get 88.
Next write it down equation-wise (User aoifehayes has it done already).
Now you can use factorising OR the "-b method" to find values for x.
Sub back in your values for x to make sure they work (ie; the left side of the equals sign equals the right side of the equals sign) and voila! Solved.
I use the big X method, its extremely handy once you get used to it. Look it up online.
X2 + 3x=88......... X2+3x-88= 0, now you have a quadratic an should be able to solve it with whatever formula you usually use