How do you factor #y= x^2-x-20# ?
y = (x + 4)( x- 5)
Find 2 numbers knowing sum (-1) and product (-20). It is the factor pairs (4, - 5). The 2 numbers are 4 and -5
y = (x + 4)(x - 5)
Find its solutions and write it as:
If you find all it's solutions
Therefore the equation can be written: