sra0cazaphany sra0cazaphany

27-09-2016
Mathematics

Answered

What number must you add to complete the square? x2 8x = 11

Verified Answer :

gashomnaggom gashomnaggom

28-09-2016

let the number be k
so x^2+8x+K=11+k
k=(coefficent of x/2)^2=8/2=4^2=16
so x^2+8x+16=11+16
(x+4)^2=27

x+4=+-root of 27
x=4+root of 27 or 4-root of 27

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bijonmcintosh23 bijonmcintosh23

08-08-2018

The answer is 16.according to apex

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