WAEC - Mathematics (2006 - No. 21)
\(x^2 + 5x - 6 = 0\)
x2 - 5x - 6 = 0
x2 + x - 6 = 0
x2 - x - 6 = 0
Giải thích
The roots are -3 and 1
x = -3 and x = 1
y = (x + 3)(x - 1)
= x2 - x + 3x - 3
y = x2 + x - 6 = 0
x = -3 and x = 1
y = (x + 3)(x - 1)
= x2 - x + 3x - 3
y = x2 + x - 6 = 0