WAEC - Mathematics (2001 - No. 19)
If \(2x^2 + kx - 14 = (x+2)(2x-7)\), find the value of K
-3
5
9
11
설명
\(2x^2 + kx - 14 = (x+2)(2x-7)\)
∴2\(x^2 + kx - 14 = 2x^2 - 3x - 14\)
equating coefficient K = -3
∴2\(x^2 + kx - 14 = 2x^2 - 3x - 14\)
equating coefficient K = -3