Answer:
(x - 
)(x + )
Step-by-step explanation:
x² - 5 ← is a difference of squares and factors in general as
a² - b² = (a - b)(a + b) , then
x² - 5
= x² - ( )²
= (x - )(x + )
It’s a triangle for the first one
Expression: 2n - 1
When n = 7
2n - 1 = 2(7) = 1 = 14 - 1 = 13
Answer:
1200*800 = 960,000 mm²
Step-by-step explanation:
1 meter is 1000 mm and 0.8 meter is 800 mm
A=lw
Answer:
4. 3/8
5. 1/20
6. 1/18
7. 2/5
8. -2/3
9. -1/14
10. 1 3/4
11. -2
12. 17 1/3
13. 10 5/6
14. 5/6
15. 6
16. 4 1/8
17. 1 7/8
18. 12
Here are your answers! I am sorry that your teacher didn't explain this math to you. Anyway, I hope you have a good day.
