Overview: 1 questions will be solved this time.Among them
           ☆1 equations

[ 1/1 Equation]
    Work: Find the solution of equation a×a-4+1.95a = 0 .
    Question type: Equation
    Solution:Original question:

a

a

−

4

+

39 20

a

=

0

    After the equation is converted into a general formula, it is converted into:
    ( 5a + 16 )( 4a - 5 )=0
    From
        5a + 16 = 0
        4a - 5 = 0
    it is concluded that:：

a1=

-

16 5

a2=

5 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》

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