Question

Simplify:
(i) [(2)^-1 + (4)^-1 + (3)^-1)^-1
(ii) 49 × z^-3 / 7^3 ×10 ×z-5
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Answer 1

Answer:

1) 9

2 z^2/70 hope it is correct

Answer 2

Answer i

(2)^-1 + (4)^-1 + [(3)^-1)]^-1

=⟩ 1/2 + 1/4 + 3

=⟩ (2 + 1 + 12) / 4

=⟩ 15/4

=⟩ 3 whole 3/4 (Ans)

Answer ii

(49 × z^-3) / (7^3 ×10 ×z-5)

=⟩ (7² × z^-3) / (7³ × 10 × z^-5)

=⟩ 7² × z⁵ / 7³ × 10 × z³

=⟩ z² / (7 × 10)

=⟩ z²/70 (Ans)

Hope you found my answer helpful, cheers :)