Advertisements
Advertisements
Question
Find the sum of: 5x2 – 2xy + 3y2 and – 2x2 + 5xy + 9y2 and 3x2 -xy- 4y2
Advertisements
Solution
5x2 – 2xy + 3y2 and – 2x2 + 5xy + 9y2 and 3x2 -xy- 4y2
5x2 – 2xy + 3y2 + – 2x2 + 5xy + 9y2 + 3x2 -xy- 4y2
= 5x2 - 2x2 + 3x2 - 2xy + 5xy - xy + 3y2 + 9y2 - 4y2
= 8x2 - 2x2 + 5xy - 3xy + 12y2 - 4y2
=6x2 + 2xy + 8y2
APPEARS IN
RELATED QUESTIONS
Identify term and factor in the expression given below:
− 4x + 5
Find the sum of: 4x3 + 2x2 – x + 1, 2x3 – 5x2 – 3x + 6, x2 + 8 and 5x3 – 7x
Find the missing term
6xy × _________ = –12x3y
Find the numerical co-efficient of the following term:
9pq
Factorised form of r2 – 10r + 21 is ______.
The factors of x2 – 4 are ______.
h is a factor of 2π (h + r).
Common factor of 12a2b2 + 4ab2 – 32 is 4.
Factorise the following expression.
6ab + 12bc
Factorise the following expression.
2x2 – 2y + 4xy – x
