Simplify \( \sqrt{160r^2} + \sqrt{71r^4} + \sqrt{100r^2} \)

Assessment: JAMB UTME - Mathematics - 1990 Subject: General Mathematics

Question 1 Report

Simplify \( \sqrt{160r^2} + \sqrt{71r^4} + \sqrt{100r^2} \)

Answer Details
160 r 2 + 71 r 4 + 100 r 8
Simplifying from the innermost radical and progressing outwards we have the given expression
160 r 2 + 71 r 4 + 100 r 8  =  160 r 2 + 81 r 4
160 r 2 + 9 r 2  =  169 r 2
= 13r

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