How do you find the solution to the quadratic equation 2x^2 + 7 = 3x?

1 Answer
Jun 18, 2018

color(maroon)(x_+ = (3 + i sqrt(47)) / 4, x_- = (3 - i sqrt(47))/4

Explanation:

2x^2 + 7 = 3x

2x^2 - 3x + 7 = 0

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a = 2, b = -3, c = 7

x = (-(-3) +- sqrt((-3)^2 - (4 * 2 * 7)))/(2 * 2)

x = (3 +- sqrt(9 - 56) ) / 4

x = (3 +- sqrt(-47)) / 4

color(maroon)(x_+ = (3 + i sqrt(47)) / 4, x_- = (3 - i sqrt(47))/4