4. Which is the equivalent expression of w(xy)¯, (3tv)-2 9t?v²w А. x² y² С. 1 x² y2 В. 9 t2v2w 5. What is the simplified form of –18a²b¬3? D. 0 -18a? А. ба? С. b3 b3 b3 В. -18a2 ба? D.

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