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aa^{2}=a^{3}
Variable a cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by ab, the least common multiple of b,ab.
a^{3}=a^{3}
To multiply powers of the same base, add their exponents. Add 1 and 2 to get 3.
a^{3}-a^{3}=0
Subtract a^{3} from both sides.
0=0
Combine a^{3} and -a^{3} to get 0.
\text{true}
Compare 0 and 0.
a\in \mathrm{R}
This is true for any a.
a\in \mathrm{R}\setminus 0
Variable a cannot be equal to 0.
aa^{2}=a^{3}
Variable b cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by ab, the least common multiple of b,ab.
a^{3}=a^{3}
To multiply powers of the same base, add their exponents. Add 1 and 2 to get 3.
\text{true}
Reorder the terms.
b\in \mathrm{R}
This is true for any b.
b\in \mathrm{R}\setminus 0
Variable b cannot be equal to 0.