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Enter the mathematical formula directly and click the "Next" button to get the calculation answer.
It supports mathematical functions (including trigonometric functions).
Current location：Mathematical operation > History of Mathematical Computation > Answer
Overview: 1 questions will be solved this time.Among them
☆1 equations
[ 1/1 Equation]
Work: Find the solution of equation x(x-3) = 180 .
Question type: Equation
Solution:Original question:
Remove the bracket on the left of the equation:
The equation is transformed into :
After the equation is converted into a general formula, it is converted into:
( x + 12 )( x - 15 )=0
From
x + 12 = 0
x - 15 = 0
it is concluded that:：
x1=-12
x2=15
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》
☆1 equations
[ 1/1 Equation]
Work: Find the solution of equation x(x-3) = 180 .
Question type: Equation
Solution:Original question:
| x | ( | x | − | 3 | ) | = | 180 |
| Left side of the equation = | x | x | − | x | × | 3 |
| x | x | − | 3 | x | = | 180 |
After the equation is converted into a general formula, it is converted into:
( x + 12 )( x - 15 )=0
From
x + 12 = 0
x - 15 = 0
it is concluded that:：
x1=-12
x2=15
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》