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Question 11 Mark

The degree of the polynomial $3 x^2-2 x y^2+5$ is ...............

Answer

The degree of the polynomial $3x^2 – 2xy^2 + 5$ is $3$.
$3x^2 – 2xy^2 + 5$ is $1 + 2 = 3$

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Question 21 Mark

The degree of the polynomial $3-5 x^2+7 x^3-x^4$ is ...............

Answer

The degree of the polynomial $3 – 5x^2 + 7x^3 – x^4 is 4.$
$3 – 5x^2 + 7x^3 – x^4 is 4$

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Question 31 Mark

In the term $-7 a^2 b c$, the coefficient of $a$ is ..............

Answer

In the term $-7a^2bc$, the coefficient of a is $-7$abc.

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Question 41 Mark

The value of the expression $2 x^3-7 x^2+5 x-3$ when $x=1$ is ..............

Answer

The value of the expression $2 x^3-7 x^2+5 x-3$ when $x=1$ is $-3.$
$2(1)^3 – 7(1)^2 + 5(1) – 3$
$= 2 – 7 + 5 – 3$
$= -3$

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Question 51 Mark

The perimeter of a triangle whose sides measure $2 a, b$ and $a+b$ is ............

Answer

The perimeter of a triangle whose sides measure $2 a, b$ and $a+b$ is $2 a+b+a+b=3 a+2 b$.

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Question 61 Mark

The factors of the term $-3 p^2 q^2$ are ............

Answer

The factors of the term $-3 p^2 q^2$ are $-3, p, p, q, q$.

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Question 71 Mark

The number of unlike terms in the algebraic expression $3x^2 – 2xy + 5x^2 $ is ………

Answer

The number of unlike terms in the algebraic expression $3 x^2-2 x y+5 x^2$ is 2

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Question 81 Mark

$-6a^2b$ and $-6ab^2$ are ……… terms.

Answer

$-6 a^2 b$ and $-6 a b^2$ are unlike terms.

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Question 91 Mark

$3a^2b$ and $-7ba^2 $ are ……….. terms.

Answer

$3 a^2 b$ and $-7 b a^2$ are like terms.

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Question 101 Mark

An algebraic expression having two unlike terms is called a ……..

Answer

An algebraic expression having two unlike terms is called a bionomial.

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Question 111 Mark

The number of terms in a monomial is ………

Answer

The number of terms in a monomial is one.

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Question 121 Mark

The terms with different algebraic factors are called ……….

Answer

The terms with different algebraic factors are called unlike terms.

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