Ask Singapore Homework?
Upload a photo of a Singapore homework and someone will email you the solution for free.
Question
secondary 3 | A Maths
2 Answers Below
Anyone can contribute an answer, even non-tutors.
Solve the simultaneous equation. Please help thank you!
Date Posted: 2 years ago
Views: 218
2y = 3x + 1
① 4y² = (3x + 1)² = 9x² + 6x + 1
x² - y² = -3
② 4x² - 4y² = -12
① + ② ⇨
4x² = 9x² + 6x + 1 - 12
5x² + 6x - 11 = 0
⇨ (5x + 11) (x - 1) = 0
x₁ = - ¹¹⁄₅ = -2.2
x₂ = 1
⇨ 2y = 3x + 1
y₁ = ( - 3 × ¹¹⁄₅ + 1)÷2 = -2.8
y₂ = (3 × 1 + 1)÷2 = 2
① 4y² = (3x + 1)² = 9x² + 6x + 1
x² - y² = -3
② 4x² - 4y² = -12
① + ② ⇨
4x² = 9x² + 6x + 1 - 12
5x² + 6x - 11 = 0
⇨ (5x + 11) (x - 1) = 0
x₁ = - ¹¹⁄₅ = -2.2
x₂ = 1
⇨ 2y = 3x + 1
y₁ = ( - 3 × ¹¹⁄₅ + 1)÷2 = -2.8
y₂ = (3 × 1 + 1)÷2 = 2
See 2 Answers
done
{{ upvoteCount }} Upvotes
clear
{{ downvoteCount * -1 }} Downvotes
Try
Eliminate way
Except for the sub method
Eliminate way
Except for the sub method
Date Posted:
2 years ago
360 Tutoring Program