Which of the following is to be added to make `x^(6) -6x^(4) + 4x^(3) + 8x^(2) - 10x + 3` a perfect square ?

Which of the following should be added to make x^(4)+64 a perfect square.

x^(4)-8x^(2)+k is a perfect square then k is

Find the square root of 4x^(6) - 12x^(5) + 9x^(4) + 8x^(3) - 12x^(2) + 4

Solve 3x^(4) -8x^(3) -6x^(2) + 8x + 3 = 0 .

What must be added to x^(4) -3x^(2) +2x+ 6 to get x^(4) -2x^(3) -x+ 8?

What is the first degree expression to be added tol6x ^(6)+8x^(4)-2x^(3)+x^(2)+2x+1 in order to make it a perfect square?