An expression is written as m−5(m+3) +7m. What is the value of the expression when m=x+1?
A
3(x−4)

B
3(x−6)

C
3(x−5)+1

D
3(x+5)+1

The focus of parabola is (-4, -5), and its directrix is y= -1. fill in the missing terms and signs in parabolas equation in standard form

5, 6, 10 question: a. determine whether the side lengths form a triangle. (explain your reasoning) b. if it is a triangle, determine whether it is a right, acute, or obtuse triangle. (show your work)

Factor the polynomial expression x6 – x3 – 20