Maths-
SAT
Easy
Question
How many solutions does the equation x(x-4)=(x-1)(x+1) have?
- Zero
- One
- Two
- More than two
The correct answer is: One
x(x - 4) = (x -1)(x + 1)
x2 - 4x = x2 - 1
-4x = -1
.
The equation have one and only one solution.
.The equation have one and only one solution.
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