Respuesta :
Answer:
The correct ans is...
3 x square + 5 x - 5
Step-by-step explanation:
U can only subtract or add if u hv the same variable..
here -2x and 7x have the same variable...
so -2x + 7x = 5x
Therefore the ans is....
3 x square + 5 x - 5
Hope this helps....
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Answer:
3x²+5x-5
Step-by-step explanation:
collect like terms.
3x²+(-2x+7x)-5
3x²+ 5x-5