Advertisements
Advertisements
Question
Evaluate :
−7x2 + 18x2 + 3x2 − 5x2
Sum
Advertisements
Solution
−7x2 + 18x2 + 3x2 − 5x2
= 21x2 − 12x2
= 9x2
shaalaa.com
Combining like Terms
Is there an error in this question or solution?
APPEARS IN
RELATED QUESTIONS
Evaluate :
7x − 9y + 3 − 3x − 5y + 8
Add : 5a + 3b, a − 2b, 3a + 5b
Add : x3 − x2y + 5xy2 + y3, - x3 − 9xy2 + y3, 3x2y + 9xy2
Find the total savings of a boy who saves ₹ (4x – 6y), ₹ (6x + 2y), ₹ (4y – x) and ₹ (y – 2x) for four consecutive weeks.
Subtract : 3a − 5b + c + 2d from 7a − 3b + c − 2d
Subtract : x3 − 4x − 1 from 3x3 − x2 + 6
Subtract : 6a + 3 from a3 − 3a2 + 4a + 1
How much more than 2x2 + 4xy + 2y2 is 5x2 + 10xy – y2 ?
How much less 2a2 + 1 is than 3a2 – 6 ?
The perimeter of a triangle is 8y2 – 9y + 4 and its two sides are 3y2 – 5y and 4y2 + 12. Find its third side.
