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- Simplification: 25^2.7 × 5^4.2 ÷ 5^5.4 = ?
Question 1:
Simplification: 25^2.7 × 5^4.2 ÷ 5^5.4 = ? A. 5^4
B. 5^3.2
C. 5^4.1
D. 5^4.2
Feedback 25^2.7 × 5^4.2 ÷ 5^5.4
= 5^5.4 × 5^4.2 ÷ 5^5.4
= 5^5.4 × 5^4.2 ÷ 5^5.4
= 5^5.4 × 5^-1.2
= 5^(5.4 -1.2)
= 5^4.2
= 5^5.4 × 5^4.2 ÷ 5^5.4
= 5^5.4 × 5^4.2 ÷ 5^5.4
= 5^5.4 × 5^-1.2
= 5^(5.4 -1.2)
= 5^4.2
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