Question

Factorise x+3x-28 by splitting the middle term​

Answer 1

x² + 3x - 24

x² + 7x - 4x - 24

x (x + 7) - 4 (x + 7)

(x + 7) (x - 4)

x + 7 = 0 or x - 4 = 0

x = -7 or x = 4