Ask Singapore Homework?
Upload a photo of a Singapore homework and someone will email you the solution for free.
Question
secondary 3 | A Maths
One Answer Below
Anyone can contribute an answer, even non-tutors.
Pls help. Thanks in advance.
Date Posted: 2 months ago
Views: 66
2x² - 4x + 7
= 2(x² - 2x) + 7
= 2(x - 2x(1) + 1² - 1²) + 7
= 2(x - 2x(1) + 1²) - 2 + 7
= 2(x - 1)² + 5
= 2(x² - 2x) + 7
= 2(x - 2x(1) + 1² - 1²) + 7
= 2(x - 2x(1) + 1²) - 2 + 7
= 2(x - 1)² + 5
Alternatively,
2x² - 4x + 7
= 2(x² - 2x + 3.5)
= 2( (x - 2/2)² - (2/2)² + 3.5 )
= 2( (x - 1)² - 1 + 3.5 )
= 2( (x - 1)² + 2.5 )
= 2(x - 1)² + 5
2x² - 4x + 7
= 2(x² - 2x + 3.5)
= 2( (x - 2/2)² - (2/2)² + 3.5 )
= 2( (x - 1)² - 1 + 3.5 )
= 2( (x - 1)² + 2.5 )
= 2(x - 1)² + 5
See 1 Answer
done
{{ upvoteCount }} Upvotes
clear
{{ downvoteCount * -1 }} Downvotes
Contribute by J in the comment sections
Date Posted:
2 months ago
360 Tutoring Program