Question

Jawab pakai cara no 1-2

Answer 1

1.)
28x^2 - 8x^3 - 35 + 10x - 14x + 4x^2 = -8x^3 + 28x^2 + 4x^2 + 10x - 14x - 35 
                                                     = -8x^3 + 32x^2 - 4x -35

2.)
a +2b = 3n^2 - 5n + 2 + (2 (2n^2 + 1))
         = 3n^2 - 5n + 2 + 4n^2 + 2
         = 3n^2 + 4n^2 - 5n + 2 + 2 = 7n^2 - 5n + 4

^=pangkat