Completing the square

Front

What value of c would make this a perfect square trinomial?
x² +8x + c

Back

16

Front

x^2 + 4x + 1 = 0

Back

x = -2 ± √3

Front

Solve the quadratic equation by completing the square: x² + 12x + 8 = 0

Back

x = -6 ± 2√7

Front

Solve the equation by completing the square: x^2 + 6x - 4 = 36

Back

x = 4, -10

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