Solve the following equations transformable to quadratic equations. 2x (x + 9) = x (x - 2)
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Solve the following equations transformable to quadratic equations. 2x (x + 9) = x (x - 2)
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Answer:
2x(x + 9) = x(x - 2)
2x² + 18x = x² - 2x
2x² - x² + 18x + 2x = 0
x² + 20x = 0
x(x + 20) = 0
x= 0 , x + 20 = 0
x = 0 , x = -20