How do you solve #x^2-6x-27 = 0#?
The solutions are
We can Split the Middle Term of this expression to factorise it and thereby find solutions.
In this technique, if we have to factorise an expression like
After trying out a few numbers we get
Now we equate these factors to the R.H.S (
Solve y = x^2 - 6x - 27 = 0
Ans: -3 and 9
x^2 - 6x - 27 = 0
Find 2 numbers knowing sum (6) and product (-27). Roots have opposite signs.
Factor pairs of -27 --> (-1, 27)(-3, 9). This last sum is 6 = -b. Therefor, the 2 real roots are: -3 and 9.