Question

2a^6divided(2a^*2a^4) where a is a rational number please tell me it is very urgent

Answer 1

Answer:

2 (i) 1/2, (ii) 1/(7.3)^7, (iii) 5^3

Step-by-step explanation:

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2 (i) (2a^6)/(2a^2 X 2a^4)

      2 in Numerator(N) and one 2 in denominator(D) get cancelled. a^6 in N and a^6 in D get also cancelled. So, only 1/2 remains.

2 (ii) (1/7.3)^2 can be written as (7.3)^-2. So, the answer is (7.3)^-7, can be written as 1/(7.3)^7.

2 (iii) (5^2 X 5^5) can be written as (5^7). So, (5^10)/(5^7) becomes 5^3.

Answer 2

Answer :

2.

(i) Now, 2a⁶ ÷ (2a² × 2a⁴)

= (2a⁶) ÷ {(2 × 2) × (a² × a⁴)}

= (2a⁶) ÷ (4 × a²⁺⁴)

= (2a⁶) ÷ (4a⁶)

= 2 ÷ 4

= 1 ÷ 2

(ii) Now, (7.3)⁻⁵ × (1/7.3)²

= (7.3)⁻⁵ × (7.3⁻¹)²

= (7.3)⁻⁵ × (7.3)⁻²

= (7.3)⁻⁵⁻²

= (7.3)⁻⁷

= (1/7.3)⁷

(iii) Now, 5¹⁰ ÷ (5² × 5⁵)

= 5¹⁰ ÷ (5²⁺⁵)

= 5¹⁰ ÷ 5⁷

= 5¹⁰⁻⁷

= 5³

= 125