What should be added to 2x + 6x? – 5x + 8 to get 3x – 2x² + 6x + 15 ?
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Answer:
2x+6x+(5x+x-2xsquare+7)-5x+8
Step-by-step explanation:
2x+6x+(5x+x-2xsquare+7)-5x+8
2×+6x+5x+x-2xsquare+7-5x+8
2x+x=3x
5x-5x=0
7+8=15
=3x-2xsquare+6x+15
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