Ask Singapore Homework?
Upload a photo of a Singapore homework and someone will email you the solution for free.
Question
secondary 2 | Maths
One Answer Below
Anyone can contribute an answer, even non-tutors.
I dont understand.
Date Posted: 3 years ago
Views: 225
Since (a+b)^2 = a^2 + 2ab + b^2
Their expecting you to apply substitution of the values given in the question to find 3(x+y)^2
If you expand 3(x+y)^2, it will be 3x^2 + 6xy + 3y^2
From there, you should rearrange the variables so its easier to understand, 3x^2 + 6xy + 3y^2 = 3x^2 + 3y^2 + 6xy
Now it should be easier to understand, from here all you have to do is sub in the values given in the questions so you will end up with :
3(14) + 6(5) = *72*
Their expecting you to apply substitution of the values given in the question to find 3(x+y)^2
If you expand 3(x+y)^2, it will be 3x^2 + 6xy + 3y^2
From there, you should rearrange the variables so its easier to understand, 3x^2 + 6xy + 3y^2 = 3x^2 + 3y^2 + 6xy
Now it should be easier to understand, from here all you have to do is sub in the values given in the questions so you will end up with :
3(14) + 6(5) = *72*
See 1 Answer
done
{{ upvoteCount }} Upvotes
clear
{{ downvoteCount * -1 }} Downvotes
Replace a with x and b with y to find (×+y)^2 using special product rule.
Date Posted:
3 years ago
360 Tutoring Program