Math 9 Chapter 4
Algebraic Expressions and Algebraic Formulas-9


1. If X= a+b, Y= a-b then XY= a2 - b2


2. The additive inverse of x + y is x - y.


3. 5x3 + 7x2 +3 is a cubic polynomial.


4. A quantity which remains same through out the problem is called constant.


5. In 5x3+6x3y2+2xy, the coefficient of the term of highest degree is 5.


6. 6x4y2 = 2x2y2 3x2y4

7. The product of (Öx + Öy) and (Öx - Öy) is (x-y)


8. Every polynomial is a rational expression but every rational expression is not a polynomial expression.


9. x3+x/y + x + y2/x +y is ________________.





10. x2y2+y2+yz+a is a polynomial of ______________ variable.




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