Question

Evaluate 5-² ÷ (4-² × 5-²)​

Answer 1

Step-by-step explanation:

${5}^{ - 2} \div ( {4}^{ - 2} \times {5}^{ - 2} ) \\ {5}^{ - 2} \div {20}^{ - 2} \\ {5}^{ - 2} \times \frac{1}{ {20}^{ - 2} } = \frac{ {5}^{ - 2} }{ {20}^{ - 2} } = \frac{ {1}^{ - 2} }{ {4}^{ - 2} }$

therefore answer=(1/4)-²

Answer 2

Step-by-step explanation:

refer to the attachment