Question

Factor x^3 - 4x^2 + 7x - 28 by grouping. What is the resulting expression

Answer 1

Explanation:

x³ - 4x² + 7x - 28 = x³ - 4x² + 7x - 7*4

= x²(x - 4) + 7(x - 4)

= (x - 4 )(x² + 7)