Question

how to solve 4x^2 - 6x - 28 by mid-term splitting?

Answer 1

Answer:

4x²+8x-14x-28 = 0

4x(x-2)-14(x-2)

(4x-14)(x-2)

#BAL

Answer 2

Answer:

4x^2-6x-28

_ _ 4×-28 = -112

4x^2+14x-8x-28. -8 × 14

2x(2x+7)-4x(2x+7)

(2x+7)(2x-4)

2x+7=0 or 2x-4=0

2x=7 or 2x=4

x=7/2=3.5 or x=4/2=2