Q1 of 47 Page 74

Find the zeros of the following polynomials.

i. p(x)= 4x – 1


ii. p(x) = 3x + 5


iii. p(x) = 2x


v. p(x) = x + 9

i. p(x) = 4x – 1



⇒


⇒


Hence, is the zero of p(x).


ii. p(x) = 3x + 5



⇒


⇒


Hence, is the zero of p(x).


iii. p(x) = 2x


p(0) = 2(0) = 0


Hence, 0 is the zero of p(x).


iv. p(x) = x + 9


p(-9) = -9 + 9 = 0


Hence, -9 is the zero of p(x).


More from this chapter

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4

Classify the following polynomials based on their degree.

i. 3x2 + 2x + 1


ii. 4x3 – 1


iii. y + 3


iv. y2 – 4


v. 4x3


vi. 2x

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Give one example of a binomial of degree 27 and monomial of degree 49 and trinomial of degree 36.

 2

Find the roots of the following polynomial equations.

i. x – 3 = 0


ii. 5x – 6 = 0


iii. 11x + 1 = 0


iv. −9x = 0

 3

Verify Whether the following are roots of the polynomial equations indicated against them.

x2 – 5x + 6 = 0; x = 2, 3