Question

4x^2-36x+56 решите быстроо

Answer 1

4х² - 36х + 56 = 0,
Д = (-36)² - 4*4*56 = 1296 - 896 = 400,
х1 = (36 + √400) / 2*4 = (36 + 20) / 8 = 56/8 = 7,
х2 = (36 - √400) / 2*4 = (36 - 20) / 8 = 16/8 = 2

Answer 2

/ - дробная черта