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In how many points will the graph of x2 + 8x + 15 intersect X-axis ? Why ? |
Answer» We can write x2 + 8x + 15 as x2 + 5x + 3x + 15 ⇒ (x + 5) (x + 3) So its zero values are -5, -3 So the graph of x2 + 8x + 15 intersect x axis at two points only. |
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