Question

Factor completely. I forgot how someone please explain. x^2-15x+56

Answer 1

Well, one way to do this simply, is try and determine which two numbers multiply to be 56 and add to be -15.

Answer 2

or you can solve this equation with discriminant

Answer 3

or you can complete the square

Answer 4

or you can use the quadratic formula

Answer 5

of we can even use calculus

Answer 6

Take your pick

Answer 7

Or you can just think for a mint and come up with :$$ (x-8)(x-7)$$

Answer 8

Thats great FoolForMath, Now we all know you can factor

Answer 9

Thanks guys

Answer 10

@LagrangeSon678: You didn't knew that before ?^^