Question

25×a-⁶÷5×10×a-¹⁰ evaluate​

Answer 1

Step-by-step explanation:

$25a {}^{ - 6} \div 5 \times 10 {a}^{ - 10} \\ = (25 \div 50) {a}^{ - 6 - ( - 10)} \\ = \frac{1}{2} {a}^{ - 6 + 10} \\ = \frac{1}{2} {a}^{4}$