THAT'S HOW MY TEACHER TAUGHT IT TO ME!!
Also, SOHCAHTOA.
Sine - Opposite over Hypotenuse; Cosine - Adjacent over Hypotenuse; Tangent - Opposite over Adjacent.
It's things like this that saved my ass in Geometry and Algebra 2.
Now I'm in Stats and it's like "forget everything you learned, you don't need it anymore" and I'm like "hell yes."
Gif unrelated.
i dont know why. ive never been helped by those kinds of things. i just memorize things well i guess. except radians always **** me. i dont have any idea why
That just means that you have to calculate both the plus and the minus answer to the equation.
so you would calculate both:
-b - (b^2-4ac squared) over 2a
and:
-b + (b^2-4ac squared) over 2a
Possibly across the street from a school. Maybe the kid sat at a window in math class, and needed some sort of way to remember the quadratic formula for a test.