Question

need the solution

the ans is there ​

Answer 1

$\rm{ 6). \: - 5( - 5)^{ - 1} }$

$\rm{ - 5 \times ( - 5)^{ - 1} }$

$\rm{ - 5 \times \frac{1}{ - 5} }$

$\rm{ = 1}$

$\rm{ 7). \: {10}^{ - 3} \times (3 \times {10}^{8})^{2} }$

$\rm{ {10}^{ - 3} \times ( {3}^{1 \times 2} \: \times \: {10}^{8 \times 2} ) }$

$\rm{ {10}^{ - 3} \times ( {3}^{2} \times {10}^{16} )}$

$\rm{ {10}^{ - 3} \times {3}^{2} \times {10}^{16} }$

$\rm{ {3}^{2} \times {10}^{ - 3} \times {10}^{16} }$

$\rm{ {3}^{2} \times {10}^{ - 3 + 16} }$

$\rm{ {3}^{2} \times {10}^{13} }$

$\rm{ = 9 \times {10}^{13} }$