Answer:
Sum is - 5n² -8n + 4.
Step-by-step explanation:
Given : (3n² – 5n + 6) + (–8n²– 3n – 2) .
To find : Sum .
Solution : We have (3n² – 5n + 6) + (–8n²– 3n – 2) .
Combine like terms :
(3n² - 8n²– 5n - 3n + 6 - 2).
- 5n² -8n + 4.
Therefore, Sum is - 5n² -8n + 4.
Answer:
15 and 9/10 or 15.9
Step-by-step explanation:
4_2/5 + 3_3/10 = 4_4/10 + 3_3/10 = 7_7/10
8_1/5 = 8_2/10
8_2/10 + 7_7/10 = 15 9/10
or 15.9
Answer:
42x² - 3x - 9
the area of the garden is:
(7x + 3)(6x - 3)
= 42x² - 21x + 18x - 9
= 42x² - 3x - 9
Answer:
x=9
Step-by-step explanation: