If K2 - 3k+1=0, then
42. k+ 1 =
kt- =
2) 9
3) 27
4) 81
43. K² + 1 / 2 -
2) 11
3) 29
4) 83
44. K + 1 / 2 -
2)49
3) 51
4) 45
If x + y = 8,x - y = 4, xy = 12
45. The value of x' + y =
1) 122
2) 226
3) 224
4) 220
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