16x³-20x+9/8x³+12x+21=4x-5/2x+3 Solve
Answers
Answer:
x = 2
Step-by-step explanation:
16x³-20x+9/8x³+12x+21=4x-5/2x+3
=> (16x³-20x+9)(2x + 3) = (8x³+12x+21)(4x - 5)
=> 32x⁴ + 48x³ - 40x² - 60x + 18x + 27 = 32x⁴ - 40x³ + 48x² -60x + 84x - 105
=> 88x³ -88x² - 66x + 132 = 0
Question should be
16x²-20x+9/8x²+12x+21=4x-5/2x+3
=> (16x²-20x+9)(2x + 3) = (8x²+12x+21)(4x - 5)
=> 32x³ + 48x² - 40x² - 60x + 18x + 27 = 32x⁴ - 40x² + 48x² -60x + 84x - 105
=> 18x + 27 = 84x - 105
=> 66x = 132
=> x = 2
Answer:
Step-by-step explanation:16x³-20x+9/8x³+12x+21=4x-5/2x+3
=> (16x³-20x+9)(2x + 3) = (8x³+12x+21)(4x - 5)
=> 32x⁴ + 48x³ - 40x² - 60x + 18x + 27 = 32x⁴ - 40x³ + 48x² -60x + 84x - 105
=> 88x³ -88x² - 66x + 132 = 0
Question should be
16x²-20x+9/8x²+12x+21=4x-5/2x+3
=> (16x²-20x+9)(2x + 3) = (8x²+12x+21)(4x - 5)
=> 32x³ + 48x² - 40x² - 60x + 18x + 27 = 32x⁴ - 40x² + 48x² -60x + 84x - 105
=> 18x + 27 = 84x - 105
=> 66x = 132
=> x = 2