Question

Please solve question 13

Answer 1

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Answer 2

Heya!!

$((a) {}^{n} ) {}^{m} = (a) {}^{mn} \\ \\ \\ \\ (4 \div 57) {}^{ - 48} = (4 \div 57) {}^{ - 5x - 3} \\ \\ \\ \\ now \: compair \: powers \: of \: (4 \div 57) \\ \\ \\ - 5x - 3 = 48 \\ \\ \\ - 5x = 51 \\ \\ \\ x = - 51 \div 5$