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Mathematics 27 Online
OpenStudy (flvskidd):

HELP PLEASE

OpenStudy (flvskidd):

Two students, Jennifer and Jamal, factored the trinomial 6x2 − 3x − 9. Jamal factored it as 3(2x − 3)(x + 1) and Jennifer factored it as (2x − 3)(3x + 3). Indicate which student factored the trinomial completely and which student did not, and explain why.

Mehek (mehek14):

Jeniffer did not factor completely because all three terms have the common factor : 3 which should be on the outside of the parenthesis like Jamal did.

OpenStudy (flvskidd):

You're amazing. Can you help me with two more?

OpenStudy (flvskidd):

Suppose C and D represent two different school populations where C > D and C and D must be greater than 0. Which of the following expressions is the largest? Explain why. Show all work necessary. (C + D)2 2(C + D) C2 + D2 C2 − D2

Mehek (mehek14):

5 mins?

OpenStudy (flvskidd):

ok

Mehek (mehek14):

for this one, if I put C = 2 and D = 1 (2+1)^2 = 9 2*(2+1) = 6 2^2 + 1^2 = 5 2^2 - 1^2 = 3 so A

OpenStudy (flvskidd):

Okay and one more. The functions f(x) = –(x + 4)2 + 2 and g(x) = (x − 2)2 − 2 have been rewritten using the completing-the-square method. Is the vertex for each function a minimum or a maximum? Explain your reasoning for each function.

Mehek (mehek14):

f(x) = max because first term is negative g(x) = min because first term is positive

OpenStudy (flvskidd):

TY! Good luck with whatever you do!

Mehek (mehek14):

YW and TY :D

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