Using the quadratic formula to solve 4x2 - 3x + 9 = 2x + 1, what are the values of x?
Solution:
Given equation 4x2 - 3x + 9 = 2x + 1
Arrange the given equation in the standard form ax2 + bx+ c= 0
4x2 - 3x - 2x + 9 - 1 = 0
4x2 - 5x + 8 = 0
Here a= 4, b = -5, c = 8
Apply the quadratic formula,
x = {-b ± √(b² - 4ac)}/2a
= {-(-5) ± √((-5)2 - 4(4)(8))}/2(4)
= {5 ± √(25 -128)}/8
= {5 ± √-103}/8
x = {5 ± √103i}/8
Using the quadratic formula to solve 4x2 - 3x + 9 = 2x + 1, what are the values of x?
Summary:
Using the quadratic formula to solve 4x2 - 3x + 9 = 2x + 1, the values of x are {5 ± √103i}/8.
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