Question

решите пожалуйста по дискриминанту

Answer 1

D = b² -4ac = 361 - 4*4*12 = 169
x₁ = (19+13)/8 = 4
ч₂ = (19 -13)/8 = 3/4
4х² -19х +12 = 4(х - 3/4)(х - 4) = (4х -3)(х - 4)