Question

(13 power 2 -12 power 2 ) × (-3/5) power 3 × 5/2​

Answer 1

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$( {13}^{2} - {12}^{2} ) \times { (\frac{ - 3}{5}) }^{2} \times \frac{5}{2}$

$= (169 - 144) \times \frac{9}{25} \times \frac{5}{2}$

$= 25 \times \frac{9}{25} \times \frac{5}{2}$

$= \frac{9 \times 5}{2}$

$\frac{45}{2} or 22.5$