Question

(x+1) (x-2) = 0
options : 1) a linear equation
2) a cubic equation
3) a simple equation
4) a quadratic equation
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Answer 1

Answer:

(x+1) (x-2) = 0

x² + ( 1 x - 2)x + ( 1 - 2)

x² - 2x - 2

so it is a quadratic equation

I would like it is a brilliant answer thanks