Mathematics, 29.05.2020 00:58 qvezne7683
Penelope determined the solutions of the quadratic function by completing the square.
f(x) = 4x2 + 8x + 1
–1 = 4x2 + 8x
–1 = 4(x2 + 2x)
–1 + 1 = 4(x2 + 2x + 1)
0 = 4(x + 2)2
0 = (x + 2)2
0 = x + 2
–2 = x
What error did Penelope make in her work?
Answers: 1
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Penelope determined the solutions of the quadratic function by completing the square.
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