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Math 9 Chapter 4
Algebraic Expressions and Algebraic Formulas-9
1.
If X= a+b, Y= a-b then XY= a
2
- b
2
a) True
b) False
2.
The additive inverse of x + y is x - y.
a) True
b) False
3.
5x
3
+ 7x
2
+3 is a cubic polynomial.
a) False
b) True
4.
A quantity which remains same through out the problem is called constant.
a) True
b) False
5.
In 5x
3
+6x
3
y
2
+2xy, the coefficient of the term of highest degree is 5.
a) True
b) False
6.
6x
4
y
2
= 2x
2
y
2
3x
2
y
4
a) False
b) True
7.
The product of (
Ö
x +
Ö
y) and (
Ö
x -
Ö
y) is (x-y)
a) True
b) False
8.
Every polynomial is a rational expression but every rational expression is not a polynomial expression.
a) False
b) True
9.
x
3
+x/y + x + y
2
/x +y is ________________.
a) Irrational Expression
b) Both rational & Irrational
c) Rational Expression
d) Polynomial
10.
x
2
y
2
+y
2
+yz+a is a polynomial of ______________ variable.
a) 3
b) 1
c) 2
d) 4
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