Answer:
3x - 5 + 2x² + 9x = 3x + 2x² + 9x - 5 = TRUE = 2 x^2 + 12 x - 5
Step-by-step explanation:
left: Simplify the following:
2 x^2 + 9 x + 3 x - 5
Grouping like terms, 2 x^2 + 9 x + 3 x - 5 = 2 x^2 + (3 x + 9 x) - 5:
2 x^2 + (3 x + 9 x) - 5
3 x + 9 x = 12 x:
Answer: 2 x^2 + 12 x - 5
_______________________
Simplify the following:
2 x^2 + 9 x + 3 x - 5
Grouping like terms, 2 x^2 + 9 x + 3 x - 5 = 2 x^2 + (3 x + 9 x) - 5:
2 x^2 + (3 x + 9 x) - 5
3 x + 9 x = 12 x:
Answer: 2 x^2 + 12 x - 5
