Advertisements
Advertisements
प्रश्न
Evaluate :
−7x2 + 18x2 + 3x2 − 5x2
योग
Advertisements
उत्तर
−7x2 + 18x2 + 3x2 − 5x2
= 21x2 − 12x2
= 9x2
shaalaa.com
Combining like Terms
क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
APPEARS IN
संबंधित प्रश्न
Add : 5a + 3b, a − 2b, 3a + 5b
Add : a − 3b + 3; 2a + 5 − 3c; 6c − 15 + 6b
Add : 13ab − 9cd − xy, 5xy, 15cd − 7ab, 6xy − 3cd
Subtract : x3 − 4x − 1 from 3x3 − x2 + 6
Take m2 + m + 4 from −m2 + 3m + 6 and the result from m2 + m + 1.
How much less 2a2 + 1 is than 3a2 – 6 ?
If x = 6a + 8b + 9c ; y = 2b – 3a – 6c and z = c – b + 3a ; find :
- x + y + z
- x – y + z
- 2x – y – 3z
- 3y – 2z – 5x
The sides of a triangle are x2 – 3xy + 8, 4x2 + 5xy – 3 and 6 – 3x2 + 4xy. Find its perimeter.
The perimeter of a triangle is 8y2 – 9y + 4 and its two sides are 3y2 – 5y and 4y2 + 12. Find its third side.
What must be subtracted from 19x4 + 2x3 + 30x – 37 to get 8x4 + 22x3 – 7x – 60 ?
