Ask a Doubt
Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 10 Answered

If  x=3+31/3+32/3   Find value of X3-9x2+8x+12
Asked by sunil | 11 Jul, 2018, 09:42: PM
answered-by-expert Expert Answer
x = 3 + 31/3 + 32/3 
x - 3 = 31/3 + 32/3 
Taking cube on both sides
(x - 3)3 = (31/3 + 32/3)3 
x3 - 3x2 (3) + 3x (32) - 27 = 3 + 9 + 3(31/3)(32/3) [31/3 + 32/3]
x3 - 9x2 + 27x - 27 = 12 + 9(x - 3)
x3 - 9x2 + 27x - 27 - 9x + 27 = 12
x3 - 9x2 + 18x - 12 = 0
Answered by Sneha shidid | 12 Jul, 2018, 09:39: AM

Application Videos

Concept Videos

Multiple Choice Questions Practice Test Subjective Questions Webinar Subjective Questions Pre Board Assessment
Answered Unanswered My Questions My Answers
CBSE 10 - Maths
if sin (x+30°)=1/2 find x
Asked by pednekarpreeti37 | 01 Oct, 2023, 05:01: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
solve a question for me. length breath and height of a cuboidal room are 6.15m ,4.25m,and 3.15m.Find the length of the longest rod required to measure each of the length breath and height of the room completel [exactly].Also find how many times we will use this rod of longest length to measure length,breath and height.
Asked by d17896354 | 29 Sep, 2023, 06:25: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
if in an A.P. the sum of m terms equal to n and the sum of n terms is equal to m, then prove that the sum of (m+n) terms is -(m+n)
Asked by ananya_monica | 28 Sep, 2023, 07:07: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
write the highest exponent degree of the polynomial p(x)= 2x²-x³+5
Asked by mff2130 | 26 Sep, 2023, 07:46: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
What is the HCF of the numbers 440 and 1782
Asked by pak420280 | 25 Sep, 2023, 07:51: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
mode-median = ________
Asked by tanya78904321 | 24 Sep, 2023, 07:12: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
solve this
question image
Asked by simmysingh1aug | 21 Sep, 2023, 01:48: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
find the sum of 8 multiple of 1.5
Asked by simmysingh1aug | 20 Sep, 2023, 10:20: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
Triangle chapter case study
question image
Asked by darshanpatilr08 | 19 Sep, 2023, 10:35: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
what is triangle
Asked by suryapalsinghgoudmahirajbanna | 17 Sep, 2023, 10:50: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt

Be a Top Scorer in the Exam with Test Series and Test Generator!

Enrol Now
×