Math, asked by shikhaupadhayay3, 4 days ago

1. निम्न द्विघात बहुपदों के शून्यक ज्ञात कीजिए और शून्यकों तथा गुणांकों के बीच के संबंध में
सत्यता की जाँच कीजिए :
x-2x-8

Answers

Answered by shyamkumar06
5

Answer:

Comparing given polynomial with general form of quadratic polynomial , ax²+ bx+c

We get a = 1, b = -2 and c = -8

We have, x²-2x-8

x²-4x+2x-8

= x(x−4)+2(x−4) = (x−4)(x+2)

Equating this equal to 0 will find values of 2 zeroes of this polynomial.

(x−4)(x+2) = 0

⇒ x = 4, −2 are two zeroes.

Sum of zeroes = - b/a

4 +(-2) = - (-2)/1

2 = 2

Product of zeroes = c/a

4× (-2) = - 8/1

- 8 = - 8

Answered by Salmonpanna2022
4

Step-by-step explanation:

गुणनखंड विधि से :

x^2 - 2x - 8

→ x^2 - 4x + 2x - 8 = 0

→ x(x - 4) + 2 (x - 4 ) = 0

→ x(x - 4) + 2 (x - 4) = 0

→ (x - 4 ) (x + 2) = 0

→ x - 4 = 0, x + 2 = 0

→ x = 4, x = -2

शुन्यक, α = 4 , β = -2

शुन्यकों तथा गुणांकों के बीच संबंध की सत्यता की जाँच :

a = 1, b = 2, और C = 8

शुन्यकों का योग α + β = -b/a

[4 +(-2)] = -(-2)/1

2 = 2 - ------(i)

शुन्यकों का गुणनफल (αβ) = c/a

[4(-2)] = (-8)/1

-8 = -8 --------(ii)

दोनों स्थितियों में संबंध सत्य है |

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