9x 5 • 2x³ = 18x 8 6x 8 • -3x = -18x 9 90x 5 ÷ 2x³ = 45x 2 15x 8 ÷ 5x = 3x 7 15x 0 = 1 (6x 2 ) 3 = 216x 6 (9x 5 ) 2 = 81x 10 4x 6 • 8x -5 = 32x 9x -2 • x³ • 11x = 99x 2 x 5 • 2x -3 = 2x 2 99x 0 = 1 (6x 5 ) 3 = 216x 15 81x 6 ÷ 9x = 9x 5 5x • 6x³ • 4x² = 120x 6 450x 0 = 1 40x 4 ÷ 20x 3 = 2x (3x 8 ) 4 = 81x 32