Question

Match the equation with its solution.

x - 5 \sq.rt{x} +6=0

x4 - 11x2 + 24 =0

x - 7 \sq.rt{x} =-12

x4 -13x2 + 36 =0

x4 + x2 =12

answers:
1) x=,+ or -2, + or -3
2) x=, = or -2 square root of 2 or, = or - square root of -3
3) x=9 or x=16
4) no solution
5) x=4 or x=9
6) x=, + or - square root of 3, + or -2i