1.

[(1/2)^-2+(1/2)^-3]÷(1/4)^-2​

Answer»

Answer:

(1/2)⁻² + (1/2)⁻³ ÷ (1/4)⁻²

= (1/4)⁻¹ + (1/8)⁻¹ ÷ (1/16)⁻¹

= (4) + (8) ÷ (16)

= 4 + (8 × 1/16)

= 4 + 1/2

= 8/2 + 1/2

=  9/2

= 4.5

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