Question

Please answer the full solution. ​

Answer 1

Answer:

$a) \: ( - 3) {}^{x + 1} = 81 \times 9$

$( - 3) {}^{x + 1} = ( - 3) {}^{4} \times ( - 3) {}^{2}$

$( - 3) {}^{x + 1} = ( - 3) {}^{6}$

X + 1 = 6

X = 6-1 = 5

$c) \: 5 {}^{2x + 1} \div 25 = 5 {}^{3}$

$5 {}^{2x + 1} \div 5 {}^{2} = 5 {}^{3}$

$5 {}^{2x + 1 - 2} = 5 {}^{3}$

2x + 1 - 2 = 3

2x - 1 = 3

2x = 3+1

2x = 4

x = 2

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