Which of the following statements is definitely true according to the passage?
Statement 4 is directly mentioned in the passage and is definitely true. All the other statements are near to the subject mentioned in the passage and therefore will be counted as personal views and not true according to the passage.
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?