posted by Rowley on .
how do you solve:
x²-2x-15 ≤ 0
please help :)
You want to get two numbers that multiply to the last term (-15) and add to the middle term (-2). These numbers are -5 and 3. (x-5)(x+3) is your answer
oh so that's it? lol i did that but i thought it wasn't correct and i've been trying other methods for the past hour. thatnx alot :)