Factor By Grouping (Use the box method to factor by grouping show your work)

6) 5x^3 - 4x^2 + 25x - 20

7) 3n^3 - 8n^2 - 15n + 40

(SHOW THE WORK WITH THE BOX METHOD)

(98 points) i need with 5 questions. answer definitions are welcomed, but not necessary.

Determine whether triangle tjd is congruent to triangle sek  givent (-4,-2), j (0,5), d (1,-1), s (-1,3), e (3,10), k (4,4)and explain the reason.  select one: a. yes, by sssb. no, by aasc. no, by asad. yes, by sas

Calculate the density of benzene if 300ml of it weighs 263g. a. 0.88 g/ml b. 1.14 g/ml c. 78,900 g/ml d. 37 g/ml