mohon dong dijawab susah ni soalnya

1.
=8x² + 14x - 15
= x² + 14x - 15.8
       -6 + 20  -6x20
=(8x²-6) (20x-15)
=2x(4x-3) 5(4x-3)
=(2x+5) (4x-3)

2.
=z=n
=3z - 6 = 2n + 2
Z dan N = 8

1. (2x+5) (4x-3)
Yg no 2 kurang tau