If `a^2-5a+1=0` then `a^2+1/a^2=`

If 3x^2-5x+1=0 , then the value of (x^2+ 1/(9x^2)) is : यदि 3x^2-5x+1=0 , तो (x^2+ 1/(9x^2)) का मान ज्ञात कीजिए ।

If x^2-5x+1=0 , then the value of (x^4+1/x^2) div (x^2+1) is : यदि x^2-5x+1=0 , तो (x^4+1/x^2) div (x^2+1) का मान ज्ञात करें:

If a^(2)- 5a + 1 = 0 and a ne 0 , find : a^(2) + (1)/(a^(2))

If a^(2)- 5a-1= 0 and a ne 0 , find : a^(2)- (1)/(a^(2))

If A=[[3, 1], [-1, 2]] and A^(2)-5A+7I=0 , then I=

Find the cofactors of 2 and -5 in the matrix [{:(-1,0,5),(1,2,-2),(-4,-5,3):}]

If A,B,C are the cofactors of 2,3,-5 in the matrix [(-1,0,5),(1,2,-2),(-4,-5,3)] then the ascending order of A,B,C is

If a matrix A is such that 3A^(3)+2A^(2)+5A+1=0 . Then A^(-1) is equal to:

If A=[[2,0,1] , [2,1,3] , [1,-1,0]] then (A^2-5A)=