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Maths-
General
Easy
Question
Which of the following represents all the possible values of x that satisfy the equation above?
0 and 2
0 and 4
–4 and 4
4
The correct answer is: 0 and 4
○ The concept used in this question is concept of the equation. ○ In this question, equation with one variable is used, which contain only one variable. ○ In equation, LHS = RHS, always. ○ While solving separate the variable term and constant to get the solution
Step by step explanation:
○ Given: = ○ Step 1: Cross multiply both side = 2x = 2x(x - 3) 2x = 2x2 - 6x ○ Step 2: ○ Rearrange the like term 2x2 - 6x - 2x = 0 2x2 - 8x = 0 ○ Step 3: ○ Take x common from both terms x(2x - 8) = 0 (x) (2x - 8) = 0 ○ Step 3: ○ Equate both terms to zero x = 0 and 2x - 8 = 0 2x = 8 x = x = 4 Hence, the value of x which satisfy above equation are 0 and 4.