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Kirti

· started a discussion

· 1 Months ago

error in question (Question: 364687.0 )

english version of question is wrong

Question:

If x = 5+ 523 + 513 then find the value of x3 + 15x2 + 60x – 70? 

Options:
A)

15

B)

10

C)

125

D)

100

Solution:

Ans:(b)


Knowledge Expert

· commented

· 1 Months ago

Dear Student
If we apply the cube to both sides of
(x-5)^3=(5^(2/3)+5^(1/3))
yes the question should be change to
find the value of
x^3-15x^2+60x-70
instead of x^3+15
The correct answer is 10
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