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प्रश्न
Solve the following quadratic equation by using formula method :
2x2 - 3x = 2
उत्तर
Given quadratic equation
2x2 - 3x = 2
2x2 - 3x - 2 = 0
a = 2, b = -3, c = -2
By Formula method,
`x = (-b +-sqrt(b^2 - 4ac))/(2a)`
`= (3+-sqrt(9-4(2)(-2)))/(2(2))`
`= (3+-sqrt(9+16))/4`
`= (3 +-5)/4`
`x = (3+5)/4 or x = (3-5)/4`
∴ x = `2, (-1)/2`
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