From the sum of 3x2-5x+2and -5x2-8x+6 subtract 4x2 -9x+7
Answers
Answer:
( 3x^2 - 5x + 2 ) + ( - 5x^2 - 8x + 6)
3x^2 -5x^2 - 5x - 8x +2 + 6
-2x^2 - 13x + 8
( -2x^2 - 13x + 8 ) - ( 4x^2 - 9x + 7 )
-2x^2 - 13x +8 -4x^2 +9x - 7
-2x^2 - 4x^2 - 13x + 9x +8 - 7
- 6x^2 - 4x + 1
Hope this answer helps you friend ♥️
search-icon-header
Search for questions & chapters
search-icon-image
Class 8
>>Maths
>>Algebraic Expressions and Identities
>>Operations on Algebraic Expressions
>>From the sum of 3x^2 - 5x + 2 and - 5x^
Question
Bookmark
From the sum of 3x
2
−5x+2 and −5x
2
−8x+6, subtract 4x
2
−9x+7.
Medium
Updated on : 2022-09-05
Solution
verified
Verified by Toppr
Sum of 3x
2
−5x+2 and −5x
2
−8x+6
=(3x
2
−5+2)+(−5x
2
−8x+6)
Rearranging and collecting the like terms, we get:
=3x
2
−5x
2
−5x−8x+2+6
=(3−5)x
2
−(5−8)x+2+6
=−2x
2
−13x+8
Now Subtract 4x
2
−9x+7 from −2x
2
−13x+8
(−2x
2
−13x+8)−(4x
2
−9x+7)
=−2x
2
−13x+8−4x
2
+9x−7
=−2x
2
−13x+8−4x
2
−9x−7
Rearranging and collecting the like terms, we get:
=−2x
2
−4x
2
−13x−9x+8−7
=(−2−4)x
2
−(13+9)x+8−7
=−6x
2
−4x+1