Answer:
[tex] \longrightarrow \sf \purple{ \boxed{ \bold{ \: 12x² + 12x – 18}}}[/tex]
Step-by-step explanation:
Simplify
10x² + 3x – 6 + 2x² + 9x – 12
Steps
1Ox² + 3x- 6 - 2x² + 9x - 12
Step 1:- Group like terms:
= 10x² + 2x²+ 3x + 9x - 6 - 12
Step 2:- Subtract the numbers: – 6–12 = -18
= 10x² + 2x² + 3x + 9x – 18
Step 3:- Add similar elements: 10x² + 2x² – 12x²
= 12x² + 3x + 9x – 18
Step 4:- Add similar elements: 3x + 9x – 12x
= 12x² + 12x – 18
