WAEC - Mathematics (2004 - No. 40)
What are the roots of the equation x2 + 3x - 4 = 0?
1, 4
-1, -4
-1, 4
-4, 1
Giải thích
x2 + 3x – 4 = 0 has roots value at the curve makes touches with the x – axis. The curve contact is at x = -4 and +1.
What are the roots of the equation x2 + 3x - 4 = 0?