Решительно пожалуйста) срочно

-x²=5x-36
((2x-10)/(x+5)-4=0
((3x+4)/5)-((x²+4x-3)/3)=1

4) x² + 5x - 36 = 0D = 25 + 144 = 169x1 = (-5 - 13)/2 = -9x2 = (-5 + 13)/2 = 45) x≠-52x²-10-4x-20 = 02x² - 4x - 30 = 0x² - 2x - 15 = 0D = 4 + 60 = 64x1 = (2-8)/2 = -3x2 = (2+8)/2 = 56) 9x + 12 - 5x²- 20x + 15 = 155x² + 11x - 12 = 0D = 121 + 240 = 361x1 = (-11 - 19)/10 = -3x2 = (-11 + 19)/10 = 0,8