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.

aoifehayes
x^2+3x=88
x^2+3x88
can you take it from here?

DylanLynch
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 equationwise (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.

Art1998
I use the big X method, its extremely handy once you get used to it. Look it up online.

Art1998
X2 + 3x=88......... X2+3x88= 0, now you have a quadratic an should be able to solve it with whatever formula you usually use

Me
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