ffcyhdhv
ffcyhdhv
28-10-2020
Mathematics
contestada
What is the sum of 3x2+5x-6 and -x2+3x+9
Respuesta :
cordellh8487
cordellh8487
29-10-2020
Answer:
2x2+8x+3
Step-by-step explanation:
=3x2+5x+−6+−x2+3x+9
=(3x2+−x2)+(5x+3x)+(−6+9)
=2x2+8x+3
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