Answer:
9x² + 5x
Step-by-step explanation:
4x² + 6x + 5x²-x
Combine like terms:-
4x² + 5x² = 9x²
6x - x = 5x
9x² + 5x
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Answer: c ???????????????????
Step-by-step explanation:
You can make the equation 12x=156-x
Then from there it become 13x=156
So x=12