x^3+3x^2=25x+75 what is the solution set
x²(x+3) = 25(x+3)divide both sides by (x+3)x² = 25subtract 25 from both sidesx² - 25(x+5)(x-5)x = { -5, 5 }
x³ + 3x² = 25x + 75x³ + 3x² - 25x - 75 = 0x²(x + 3) - 25(x + 3) = 0(x² - 25) * (x + 3) = 0(x² - 25) = 0 (x + 3) = 0x² = 25 x = -3x = ±5Hope this helps! :)
