Question

Which statement about the following equation is true. 2x^2 -9+2=-1

Answer 1

>> Answer

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2x² - 9x + 2 = -1

2x² - 9x + 2 + 1 = 0

2x² - 9x + 3 = 0

• a = 2
• b = -9
• c = 3

Soo :

D = b² - 4ac

D = (-9)² - 4(2)(3)

D = 81 - 4(6)

D = 81 - 24

D = 57

Option (C.)

Answer 2

Explanation:

2x² - 9x + 2 = -1

2x² - 9x + 3 = 0

D = b² - 4ac

D = (-9)² - 4.2.3

D = 81 - 24

D = 57

D > 0 , so there are two real roots

Option → C