Question

19⁵⁶X 19⁻⁷¹ = _____​

Answer 1

Question

19⁵⁶X 19⁻⁷¹ = _____

Solution

$= {19}^{56} \times {19}^{ - 71} \\ = {19}^{56 + ( - 71)} \\ = {19}^{ - 15}$

Trick

$(1) \: \: {a}^{m} \times {a}^{n} = {a}^{m + n} \\ (2) \: \: \frac{ {a}^{m} }{ {a}^{n} } = {a}^{m - n}$

Answer 2

1÷15181127029874798299  ≈ 0

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