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Mathematics, 29.06.2021 19:00 rainbowprincess200

If n and m are integers and a and b are real numbers, which of the following statements is incorrect? A.)
B.)
C.)
D.)
E.)

${a}^{n} \times {a}^{n} = {a}^{n + m}$
${a}^{n} \times {b}^{ - m} = {a}^{n} \div {b}^{m}$
${a}^{nm} = ( {a}^{m} ) {}^{n}$
${a}^{n} \div {a}^{ - m} = {a}^{n - m}$
$( {ab})^{nm} = {a}^{nm} \times {b}^{nm}$

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