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okoji2136
Aug 1, 2009, 08:22 PM
can u help me solve this? Xsqurd minus 5x minus 6

Unknown008
Aug 2, 2009, 08:28 AM
x^2-5x-6

You cannot solve this. There isn't any equal sign. That's an expression.

What you can do here is factorise;

x^2-5x-6 = (x+1)(x-6)

You can see it from here:

x^2-5x-6 = x^2 +x-6x-6=x(x+1)-6(x+1)=(x+1)(x-6)

If it was : x^2-5x-6 = 0, then, solving will be:

x^2-5x-6 =0

(x+1)(x-6)=0

x+1 = 0 or x-6=0

Then;

x = -1 or x=6