Question

Please Answer (i) (ii) and (iii)
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Answer 1

1)

$x {}^{a - b + b - a}$

$x {}^{0 + 0}$

$x {}^{0}$

$= 1$

2)

$x {}^{a - b + b - c + c - a}$

$x {}^{0 + 0 + 0}$

$x {0}$

$= 1$

3)

$1x {}^{b} \div x {}^{b} \times x {}^{c} \div x {}^{c}$

$1 \times 1$

$= 1$

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