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On line Solution of Monovariate Equation：
Input any unary equation directly, and then click the "Next" button to obtain the solution of the equation.
It supports equations that contain mathematical functions.
Input any unary equation directly, and then click the "Next" button to obtain the solution of the equation.
It supports equations that contain mathematical functions.
Current location：Equations > Monovariate Equation > The history of univariate equation calculation > Answer
Overview: 6 questions will be solved this time.Among them
☆6 equations
[ 1/6 Equation]
Work: Find the solution of equation 2x^2+7x+5 = 0 .
Question type: Equation
Solution:
After the equation is converted into a general formula, it is converted into:
( 2x + 5 )( x + 1 )=0
From
2x + 5 = 0
x + 1 = 0
it is concluded that:：
| x1= | - | 5 2 |
| x2=-1 |
There are 2 solution(s).
解一元二次方程的详细方法请参阅：《一元二次方程的解法》
[ 2/6 Equation]
Work: Find the solution of equation 8y^2+6y-3 = 0 .
Question type: Equation
Solution:
The solution of the equation:
y1≈-1.093070 , keep 6 decimal places
y2≈0.343070 , keep 6 decimal places
There are 2 solution(s).
解程的详细方法请参阅：《方程的解法》
[ 3/6 Equation]
Work: Find the solution of equation 4x^2+15x+9 = 0 .
Question type: Equation
Solution:
After the equation is converted into a general formula, it is converted into:
( x + 3 )( 4x + 3 )=0
From
x + 3 = 0
4x + 3 = 0
it is concluded that:：
x1=-3
| x2= | - | 3 4 |
There are 2 solution(s).
解一元二次方程的详细方法请参阅：《一元二次方程的解法》
[ 4/6 Equation]
Work: Find the solution of equation 2x^2-5x+3 = 0 .
Question type: Equation
Solution:
After the equation is converted into a general formula, it is converted into:
( x - 1 )( 2x - 3 )=0
From
x - 1 = 0
2x - 3 = 0
it is concluded that:：
x1=1
| x2= | 3 2 |
There are 2 solution(s).
解一元二次方程的详细方法请参阅：《一元二次方程的解法》
[ 5/6 Equation]
Work: Find the solution of equation 5y^2-21y+18 = 0 .
Question type: Equation
Solution:
After the equation is converted into a general formula, it is converted into:
( 5y - 6 )( y - 3 )=0
From
5y - 6 = 0
y - 3 = 0
it is concluded that:：
| y1= | 6 5 |
| y2=3 |
There are 2 solution(s).
解一元二次方程的详细方法请参阅：《一元二次方程的解法》
[ 6/6 Equation]
Work: Find the solution of equation 15x^2+x-2 = 0 .
Question type: Equation
Solution:
After the equation is converted into a general formula, it is converted into:
( 5x + 2 )( 3x - 1 )=0
From
5x + 2 = 0
3x - 1 = 0
it is concluded that:：
| x1= | - | 2 5 |
| x2= | 1 3 |
There are 2 solution(s).
解一元二次方程的详细方法请参阅：《一元二次方程的解法》