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How many x-intercepts does the graph of y equals 9x2 plus 30x plus 25 have?
Wiki User
∙ 12y ago
Factorising, we have,
9x2+ 30x + 25 = (3x + 5)2;thus,
when y = 0, x = -1⅔.
This tells us that the sole x-intercept of this function is at the vertex, (0, 1⅔).
Wiki User
∙ 12y ago
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