Posted by CheezyReezy on Thursday, June 9, 2011 at 12:46pm.
Hi,
can someone help me with intercepts.
find the intercepts of
f(x) = x^2  6x  2
can someone show how to work this problem.
thanks.

Math  xintercepts and yintercepts  Henry, Friday, June 10, 2011 at 8:35pm
F(x)= Y = X^2  6X  2.
XIntercepts = The solution = The points where the graph crosses the Xaxis.
Use the Quadratic formula to solve the
Eq:
X = (6 + sqrt((6)^2+4*1*2)) / 2,
X = (6 + sqrt(36+8)) / 2,
X = (6 + 6.632) / 2,
X = (6 + 6.632) / 2 = 6.316.
X = (6  6.632) / 2 = 0.0.316.
Solution set: X = 6.316, and 0.316 =
XIntercepts
In the given Eq, substitute 0 for X:
Y = 0^2  6*0  2 = 2 = YInt.