Which of the following is a solution of 3x2 = 7x - 3? a. negative 7 plus or minus the square root of 13 divided by 6 b. 7 plus or minus the square root of 85 divided by 6 c. negative 7 plus or minus the square root of 85 divided by 6 d. x - 7 plus or minus the square root of 13 divided by 6

Question

Mathematics

Roy Webster

19 January, 20:12

Which of the following is a solution of 3x2 = 7x - 3? a. negative 7 plus or minus the square root of 13 divided by 6 b. 7 plus or minus the square root of 85 divided by 6 c. negative 7 plus or minus the square root of 85 divided by 6 d. x - 7 plus or minus the square root of 13 divided by 6

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Answers (1)

Know the Answer?

Sasha Wyatt · Answer 1

3x^2 = 7x - 3

Rearranging,

3x^2 - 7x + 3 = 0

Using quadratic formula:

x = [7 + sqrt (49 - 36) ]/6

x = [7 + sqrt 13]

or

x = [7 - sqrt (49 - 36) ]/6

x = [7 - sqrt 13]/6

d. x - 7 plus or minus the square root of 13 divided by 6