Which one of the following is NOT a pressure unit?
Newton is a unit of force.
I. x2 + 91 = 20x
II. 10y2 - 29y + 21 = 0
I. 35x² + 83x + 36 = 0
II. 42y² + 53y + 15 = 0
I. x2 – 12x + 32 = 0
II. y2 + y - 20 = 0
I. x2 - 9x - 52 = 0
II. y2 - 16y + 63 = 0
I. 6x2- 47x + 77 =0
II. 6y2- 35y + 49 = 0
I. 3x2 - 14x + 15 = 0
II. 15y2- 34 y + 15 = 0
I. 15b2+ 26b + 8 = 0
II. 20a2+ 7a - 6 = 0
I. x2 – 10x + 21 = 0
II. y2 + 11y + 28 = 0
I. x²= 961
II. y= √961
If x^2 - 7x + k = 0 has roots that are equal, what is the value of k?
