Overview: 3 questions will be solved this time.Among them
☆3 equations
[ 1/3 Equation]
Work: Find the solution of equation x^2-2x = 0 .
Question type: Equation
Solution:
After the equation is converted into a general formula, it is converted into:
( x - 0 )( x - 2 )=0
From
x - 0 = 0
x - 2 = 0
it is concluded that::
x1=0
x2=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》[ 2/3 Equation]
Work: Find the solution of equation (x^2-2x)^2-2(x^2-2x) = 0 .
Question type: Equation
Solution:
After the equation is converted into a general formula, there is a common factor:
( x +0 )( x - 2 )
From
x + 0 = 0
x - 2 = 0
it is concluded that::
Solutions that cannot be obtained by factorization:
x3≈-0.732051 , keep 6 decimal places
x4≈2.732051 , keep 6 decimal places
There are 4 solution(s).
解程的详细方法请参阅:《方程的解法》[ 3/3 Equation]
Work: Find the solution of equation ((x^2-2x)^2-2(x^2-2x))^2-2((x^2-2x)^2-2(x^2-2x)) = 0 .
Question type: Equation
Solution:
After the equation is converted into a general formula, there is a common factor:
( x - 0 )( x - 2 )
From
x - 0 = 0
x - 2 = 0
it is concluded that::
Solutions that cannot be obtained by factorization:
x3≈-0.931852 , keep 6 decimal places
x4≈-0.732051 , keep 6 decimal places
x5≈0.482362 , keep 6 decimal places
x6≈1.517638 , keep 6 decimal places
x7≈2.732051 , keep 6 decimal places
x8≈2.931852 , keep 6 decimal places
There are 8 solution(s).
解程的详细方法请参阅:《方程的解法》Your problem has not been solved here? Please go to the Hot Problems section!