9
QuizMultiple Choice

Solving Quadratic Equations: Completing the Square (Continued) — Quiz

Question 9 • Algebra I

Lie is solving the quadratic equation by completing the square. 3 x squared plus 18 x minus 8 is equal to 0 3 x squared plus 18 x is equal to 8 What should Lie do next?

Answer
A
Write the polynomial as a binomial squared.
B
Factor 3 out of the variable terms.
C
Isolate the variable x .
D
Add 8 to both sides of the equation.

Explanation

The equation is already written as 3x² + 18x = 8. To complete the square, first make the coefficient of x² equal to 1 by factoring 3 out of the variable terms: 3(x² + 6x) = 8. Then Lie can proceed to add the value needed to complete the square inside the parentheses.

AI-written and checked against the verified answer.

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