Lesson 2: semester b exam algebra 1 b unit 7

1: a

2: b

3: b

4: b

5: c

6: a

7: a

8: d

9: a

10: d

11: c

12: b

13: c

14: b

15: a

16: a

17a

18: a

19: c

20: a

21: b

22: a

23: b

24: c

25: c

26: b

27: c

28: b

29: b

30: d

31: b

32: c

just took it and these are 100% right

720

step-by-step explanation:

first i did work 2nd i did work and 3rd i did work

-6 is the correct option from the above given options

any options?

step-by-step explanation:

hello from mrbilldoesmath!

answer:

(7 x + 6 y) (49 x^2 - 42 x y + 36 y^2)

discussion:

the trick is to recognize that 343 = 7^3 and 216 = 6^3 and, in general,

a^3 + b^3 =   (a + b) (a^2 - a b + b^2).

in our case

343x^3+216y^3   =   (7x)^3 + (6y)^3

so take a = 7x and b = 6y in the above equation to get the answer.

you,

mrb