Math, asked by ddhdhdhdhd, 23 days ago

if x= 5+√5 find the value of 10x+7x^2-x^3

Answers

Answered by rksinha722

5

Answer

60

Step By Step Solution

10x+7x^2-x^3

(10+7x-x^2)(-x)

{10+7(5+√5)-(5+√5)^2}{-(5+√5)}. since x =(5+√5)

{10+35+7√5-25-5-10√5}{-(5+√5)}

(15-3√5){-(5+√5)}

(5-√5)(-3)(5+√5)

(25-5)(-3)

-60.

Answered by Bharat100

0

Answer:

Step-by-step explanation:

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