solve the polynomial inequality (1) x4 - 5x2 + 4 < 0 (2) x4- 2x2 - 63 < or = 0 Share with your friends Share 1 Priyanka Kedia answered this (2) -4 View Full Answer Kirti answered this 1. x4 - 5x2 + 4< 0= x4 - 4x2 - 1x2 +4 < 0= x2( x2 - 4) -1(x2 -4) < 0= x2 - 1 <0 , x2 -4 <0= x < root 1 , x < root 4x<1, x<22. x4 - 2x2 - 63 < or = 0= x4 - 9x2 +7x2 - 63< or = 0= x2( x2-9) + 7 ( x2-9) < or = 0=x2 +7 < or = 0, x2-9 < or = 0= x <or = root 7, x <or = root 9x<or = root 7, x<or = 3 0