Question

Plz solve this question very important

Answer 1

Answer:

c)756

Step-by-step explanation:

x² - 12x + 27 = 0 ...(given)

Therefore,

a = 1

b = -12

c = 27

á + ß = -b/a = -(-12)/1 = 12

â.ß = c/a = 27/1 = 27

Therefore,

(â+ß)³ = â³ + 3â²ß + 3âß² + ß³

(â+ß)³ = â³ + 3 âß (â+ß) + ß³

â³ + ß³ = (â + ß)³ - 3âß (â + ß)

==> (12)³ - 3(27)(12)

==> 1728 - 972

==> 756

Thus, we get [â³+ß³] = 756

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