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secondary 3 | E Maths
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mary
Mary

secondary 3 chevron_right E Maths chevron_right Singapore

Qn: Solve the quadratic equation by completing the square.

Hi, can someone pls advice which part of my workings is wrong? Thank you.

Date Posted: 1 year ago
Views: 182
Eric Nicholas K
Eric Nicholas K
1 year ago
In the very first step you factored “1/2” out, not “2”, so you have to be careful with the numbers as you factor a 1/2 out! Factoring out a “1/2” out of 2 and 4 gets us 4 and 8 respectively, not 1 and 2.
Eric Nicholas K
Eric Nicholas K
1 year ago
Continuing on from the incorrect step, however, your workings are perfect!
mary
Mary
1 year ago
Thank you

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Divanesh Sharman
Divanesh Sharman's answer
2 answers (Tutor Details)
1st
I hope this solution helps!
mary
Mary
1 year ago
Thank you.