Question

If x²+kx-14= (x+2)(2x-7), find the value of k. Please solve step by step.

Answer 1

Answer:

x²-kx-14= (x+2)(2x-7)

Or, x²-kx-14= x²+2x²-7x+4x-14

Or, x²-kx-14= 3x²-3x-14

Or, x(x-k)= 3x(x-1)

Or, x- k= 3x-3

Or, k= 3-2x