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128 = 2x2x2x2x2x2x2 = 2 multiplied by itself SEVEN times, so it is 2 to the power 7. so that leaves you with √2^7 √ = anything to the power 0.5 so that leaves you with (2^7)^0.5 rule of powers involving brackets mean you multiply the power inside the bracket by the power outside the bracket so you get 2^(7x0.5) = 2^3.5 hope this helped!💗
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25-3n work out the first 3 sequences