Question

8. What number should be added to the polynomial x* - 5x +4, so that 3 is a zero ofpolynomials so obtained?

Answer 1

Answer:

x²-5x +4

Let the new polynomial be

x²-5x+4+a

Zero is 3

(3)²-5(3)+4+a = 0

9-15+4+a=0

-2+a=0

a = 2

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Answer 2

Answer:

x² - 5x +4

Let the new polynomial be x² - 5x + 4 + a

Zero is 3

Therefore, 3² - 5 × 3 + 4 + a = 0

9 - 15 + 4 +a = 0

-2 + a = 0

Hence a = 2

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