\sqrt{(272)^2-(128)^2}=?

Powers and Roots Practice Test 5

Question : 18 of 31

Marks: +1, -0

√{(272)^2-(128)^2}=?

Solution:

√{(272)^2-(128)^2}

=√{(272+128)(272-128)}

=√{400×144}

=20×12=240

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