Question

Find the value of discriminant for the quadratic equation 3x² + 2x -4 = 0.​

Answer 1

Answer:

3x

${3x}^{2} + 2x - 4 = 0 \\ {3x}^{2} + 2x = - 4 \\ {3x }^{2} = - 4 - 2x = - 6x \: so \: x = - 6 + \div {x}^{2}$

Answer 2

• here : a = 3 , b = 2 , c = -4
• D = b² - 4ac
• = (2)² - 4(3)(-4) = 4 - 4(-12) = 4 - (-48)
• = 4 + 48 = 52
• Discriminat (D) = 52

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