The quadratic functions f\left(x\right)=4x^2-1f(x)=4x
2
−1 and g\left(x\right)=-4x^2+1g(x)=−4x
2
+1 intersect at the points \left(-s,0\right)(−s,0) and \left(s,0\right)(s,0). What is the value of ss?