aubreerosehennessy95
31.12.2021 •
Mathematics
Check whether the following are quadratic equations
(I) (x-2)(x+1)=(x-1)(x+3)
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Ответ:
It's not a quadratic equation.
Step-by-step explanation:
Let's start multiplying what there is ti multiply:
x²+x-2x-2 = x²+3x-2x-3
Now bring every term to the first side of the equation:
x² - x² + x - 3x -2x + 2x - 2 + 3 = 0
-2x + 1 = 0
The exponent of the x is 1, so it's not a quadratic equation.
Ответ: