Question

Please solve it by using identities ​

Answer 1

Step-by-step explanation:

= (6¯¹ + 3¯²)×(5/2)¯¹

= ( 1/6 + 1/3²) × 2/5 (a¯¹ = 1/a)

= (1/6 + 1/9) × 2/5

= {( 3 + 2) / 18} × 2/5

= 5/18 × 2/5

= 1/9

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