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Solve x^2 - 8x = 3 by completing the square. Which is the solution set of the equation?​

Solve x^2 - 8x = 3 by completing the square. Which is the solution set of the equation-example-1

2 Answers

2 votes

Answer:

A

Explanation:

Given

x² - 8x = 3

To complete the square

add (half the coefficient of the x- term)² to both sides

x² + 2(- 4)x + 16 = 3 + 16

(x - 4)² = 19 ( take the square root of both sides )

x - 4 = ±
√(19) ( add 4 to both sides )

x = 4 ±
√(19)

Solution set is (4 -
√(19), 4 +
√(19) )

User Hari Prasanth
by
5.3k points
2 votes

1st one

Explanation:

I have answered ur question

Solve x^2 - 8x = 3 by completing the square. Which is the solution set of the equation-example-1
User Harinsa
by
5.9k points