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Mathematics 7 Online
OpenStudy (anonymous):

Simplify (8j3 + 5j2 – 3) – (5j3 + 7j2 – 12j + 7)

OpenStudy (diyadiya):

8j3 + 5j2 – 3 – 5j3 - 7j2 + 12j - 7 3j3-2j2+12j-10

OpenStudy (anonymous):

Simplify 6k(2k3 + 4k2 + 5k – 1)

OpenStudy (anonymous):

the first one

OpenStudy (diyadiya):

\[12k^4 +24k^3+30k^2-6k\]

OpenStudy (anonymous):

3+j3 +7-j5

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