Question

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Answer 1

★Given:-

• The polynomial 2x³+2x.
• x = -1

★To find:-

• The value of polynomial.

★Solution:-

Substituting the value of x in the given polynomial,

➟ 2x³+2x

➾ 2(-1)³ + 2(-1)

➾ 2(-1) - 2

➾ -2 - 2

➾ -4

Hence,

The value of polynomial is -4.

Option(D) is correct.

______________

More concepts:-

Polynomial : An expression consisting of variables and coefficients involving the operations of addition,subtraction,multiplication and division is known as a polynomial.

Types of polynomial:-

1)Monomial : An expression that contains only one term.

Examples:-

• 2x²
• 5x
• 4xy

2)Binomial : An expression that contains two terms.

Examples:-

• 2x+4
• 3x²+xy
• -6x+4

3)Trinomial : An expression that contains three terms.

Examples:-

• x²+2x-4
• 4x² + 9x + 7
• x³-2x-4

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Answer 2

◇ Given :-

•The polynomial 2x³ + 2x

•x= -1

◇ To find :-

• The value of polynomial

◇ solution:-

SUBSTITUTING THE VALUE OF X IN THE GIVEN POLYNOMIAL

=> 2x³ + 2x

=> 2(-1)³+2(-1)

=> 2(-1) - 2

=> -2 -2

=> -4

SO THE ANS IS 4

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