Maths-
General
Easy
Question
What must be subtracted from 3x2-5xy -2y2-3 to get 5x2-7xy -3y2+3x
Hint:
Subtraction of polynomials.
○ Always take like terms together while performing subtraction.
○ In addition to polynomials only terms with the same coefficient are subtracted.
The correct answer is: Hence, the other term must subtract is - 2x2 + y2 + 2xy - 3x - 3.
Answer:
Step by step explanation:
○ Given:
Terms:
3x2-5xy -2y2-3
5x2-7xy -3y2+3x
○ Step 1:
○ Let A must be subtracted from 3x2-5xy -2y2-3 to get 5x2-7xy -3y2+3x.
So,
3x2-5xy -2y2-3 - A = 5x2-7xy -3y2+3x
A = (3x2-5xy -2y2-3) - ( 5x2-7xy -3y2+3x )
A = 3x2-5xy -2y2- 3- 5x2 + 7xy + 3y2 - 3x
A = 3x2 - 5x2 + 3y2 -2y2 -5xy + 7xy - 3x - 3
A = - 2x2 + y2 + 2xy - 3x - 3
A = - 2x2 + y2 + 2xy - 3x - 3.
- Final Answer:
Hence, the other term must subtract is - 2x2 + y2 + 2xy - 3x - 3.
○ Step 1:
○ Let A must be subtracted from 3x2-5xy -2y2-3 to get 5x2-7xy -3y2+3x.
So,
3x2-5xy -2y2-3 - A = 5x2-7xy -3y2+3x A = (3x2-5xy -2y2-3) - ( 5x2-7xy -3y2+3x ) A = 3x2-5xy -2y2- 3- 5x2 + 7xy + 3y2 - 3x A = 3x2 - 5x2 + 3y2 -2y2 -5xy + 7xy - 3x - 3 A = - 2x2 + y2 + 2xy - 3x - 3 A = - 2x2 + y2 + 2xy - 3x - 3.Related Questions to study
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