Suppose that the polynomial \(f\left(x\right)=2x^5-9x^3+2x^2+9x-3\) has 5 solutions x1 ; x2; x3; x4; x5. The other polynomial \(k\left(x\right)=x^2-4\). Find the value of \(P=k\left(x_1\right)\times k\left(x_2\right)\times k\left(x_3\right)\times k\left(x_4\right)\times k\left(x_5\right)\).
