Question 317602
f(x) = 5x^2-10
5x^2-10=0
5x^210
x^2=10/5
x62=2
x=sqrt2
x=+-1.414
X intercept=(1.414,0) & (-1.414,0)
{{{ graph( 300, 200, -6, 5, -10, 10, 5x^2 -10) }}} (graph 300x200 pixels, x from -6 to 5, y from -10 to 10, 5x^2 -10).