x3 -3x 2 +4/x4 - 8x2 + 16 FACTORISE THIS Share with your friends Share 6 Anuradha Sharma answered this For numerator, x3-3x2+4 =0 checing at factors of 4 that are ±1,±2,±4at x = -1 x3-3x2+4 =-1-3+4=0 So, x+1 is a factornow at x = 2, x3-3x2+4 =8-12+4=0 So, x-2 is a factor now divide the expression by x+1x-2= x2-x-2We will get next factor as x+2.Now same approach for x4-8x2+16Let x2=t x4-8x2+16= t2-8t+16 = t-42=x2-42=x-22x+22So we get x3-3x2+4 x4-8x2+16=x+1x-22x-22x+22=x+1x+22 6 View Full Answer
