Ask Singapore Homework?
Upload a photo of a Singapore homework and someone will email you the solution for free.
Question
|
2 Answers Below
Anyone can contribute an answer, even non-tutors.
please help
Date Posted: 3 years ago
Views: 300
See 2 Answers
done
{{ upvoteCount }} Upvotes
clear
{{ downvoteCount * -1 }} Downvotes
An idea goes like this
Date Posted:
3 years ago
Non-substitution method:
x - 5√x + 6 = 0
x + 6 = 5√x
(x + 6)² = (5√x)²
x² + 12x + 36 = 25x
x² - 13x + 36 = 0
(x - 9)(x - 4) = 0
x = 9 or x = 4
x - 5√x + 6 = 0
x + 6 = 5√x
(x + 6)² = (5√x)²
x² + 12x + 36 = 25x
x² - 13x + 36 = 0
(x - 9)(x - 4) = 0
x = 9 or x = 4
360 Tutoring Program