Which of the following figures is a pair of lines that are perpendicular?
2 answers:
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x²(x - 4)(2x + 5) = 0
x² = 0 or x - 4 = 0 or 2x + 5 = 0
√x = √0 or x = 4 or 2x = -5
x = 0 x =
Answer: 0, 4,