Solving Quadratic Equations: Completing the Square (Continued) Answers

Tran is solving the quadratic equation 2x2 – 4x – 3 = 0 by completing the square. His first four steps are shown in the table.

Sienna is solving the quadratic equation by completing the square.3x2 + 9x – 4 = 0 3x2 + 9x = 4 A(x2 + 3x) = 4

Maya is solving the quadratic equation by completing the square.4x2 + 16x + 3 = 0

Atraeus is solving the quadratic equation by completing the square.7x2 – 14x + 6 = 0 7x2 – 14x = –6 A(x2 – 2x) = –6

Gio is solving the quadratic equation by completing the square.5x2 + 15x – 4 = 0

Sunil is solving the quadratic equation by completing the square.6x2 + 24x + 5 = 06x2 + 24x = –5

What are the zeros of the quadratic function f(x) = 8x2 – 16x – 15?

What are the zeros of the quadratic function f(x) = 2x2 + 16x – 9?

The first few steps in solving the quadratic equation 8x2 + 80x = −5 by completing the square are shown.8x2 + 80x = −58(x2 + 10x) = −58(x2 + 10x + 25) = −5 + ______

What are the zeros of the quadratic function f(x) = 6x2 + 12x – 7?