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Webb
Mathematics
20 October, 00:06
What is the vertex form of 2x^2+12x+14
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Lauren Bridges
20 October, 00:24
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2 (x + 3) ^2 - 2
Step-by-step explanation:
1. Factor the 2 out of the equation (don't forget about it - it will be used later). This gives you x^2 + 6x + 7
2. Subtract the 7 over. This gives you x^2 + 6x = - 7
3. Take b (6), divide it by 2 (3), and square it (9). Then add that to both sides of the equation. This gives you x^2 + 6x + 9 = 2
4. Factor the left side of the equation. This gives you (x + 3) ^2 = 2
5. Subtract the 2 over. This gives you (x + 3) ^2 - 2
6. Remember that 2 we factored out of the equation earlier? Well that goes in front of the parentheses now, giving you the final answer of 2 (x + 3) ^2 - 2
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