Solutions to several cubic equations of one variable There are several univariate cubic equations The third power of X + 5x = 6 The third power of X + 2x = 19 The third power of X + 7x = 48 By the way, it's better to talk about the truth. It's OK without it

Solutions to several cubic equations of one variable There are several univariate cubic equations The third power of X + 5x = 6 The third power of X + 2x = 19 The third power of X + 7x = 48 By the way, it's better to talk about the truth. It's OK without it

(1)x1=1
x2=0.44222-3.2553i
x3=0.42222-8.05123i
(2)x1=2.41936170320558
x2=0.12488-5.47955i
x3=0.12488-10.53523i
(3)x=3
x2=0.320436-7.214517i
x3=0.320436-14.6307155i

To solve the cubic equation x & # 179; + 2x-12 = 0

Obviously, when x = 2,
x³+2x=12,
That is, X & # 179; + 2x-12 = 0 has a root x = 2
therefore
x³+2x-12
=(x-2)(x^2+2x+6)=0
Obviously, x ^ 2 + 2x + 6 = 0 has no real solution,
So the root of the equation is only x = 2

To solve the binary linear equation: (1) 2x ^ 2-x-1 = 0 (2) 2x ^ 2 + 2X-4 = 0
To solve the binary linear equation: (1) 2x ^ 2-x-1 = 0
（2）2x^2+2x-4=0

This is twice a dollar
(1) Original formula: (2x + 1) (x-1) = 0
X = 1 or - 1 / 2
(2) Original formula: x ^ 2 + X-2 = 0
（x+2）（x-1）=0
X = - 2 or 1