The expression ( y^3 \times y ) can be simplified using the laws of exponents. When multiplying powers with the same base, you add the exponents: ( y^3 \times y^1 = y^{3+1} = y^4 ). Therefore, ( y^3 \times y = y^4 ).
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Y3
y2 * y-5 = y2 / y5 = 1/y3
30
y=3 y^3(y^3-y)= 3^3(3^3-3)= 27(27-3)= 27(24)=648