cepetan mau dikumpulin nesok

1.a. (7x² + 2x + 5) + (3x² -8x - 10) = 7x² + 3x² + 2x - 8x + 5 - 10
                                                      = 10x² - 6x - 5

1.b. (2x² - 4x + 6) - (3 - 4x + 6x²) = 2x² - 6x² - 4x + 4x + 6 - 3
                                                    = -4x² + 3

2.a. 7(2p-3) = 14p - 21
   b. 5p(p+1) = 5p² + 5p

3. a. (4mn)³ = 64m³n³
    b. (2m²n)² = 4m⁴n²