soccer2424

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help with some math please. i need help on this and i have to show my work. whats the answer to (3xcubed)squared(2x)cubed? i originally got 17x to the 9th but i got it wrong. and the answer to 2x to the -5th times y to the -3rd. on this i originally got 1 over 2x to the 5th times y to the 3rd and i got that wrong too. on this problem the exponents have to be positive in the answer too. thank u and sorry i dont know how to make the exponents on my computer. okay, better written problems. (3x^3)^2(2x)^3 and 2x^-5*y^-3