Ask a Doubt
Request a call back

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

CBSE Class 9 Answered

factorise 8x^3+y^3+27z^3-18xyz
Asked by nandu67 | 04 Oct, 2018, 09:58: AM
answered-by-expert Expert Answer
begin mathsize 16px style 8 straight x cubed space plus space straight y cubed space plus space 27 straight z cubed space minus space 18 xyz equals space left parenthesis 2 straight x right parenthesis cubed space plus space space straight y cubed space plus left parenthesis 3 straight z right parenthesis cubed space minus space 3 cross times left parenthesis 2 straight x right parenthesis space cross times straight y space cross times left parenthesis 3 straight z right parenthesis We space know space that space straight x cubed space plus space straight y cubed space plus space straight z cubed space minus space 3 xyz space equals space left parenthesis straight x space plus space straight y plus space straight z right parenthesis space left parenthesis straight x squared plus straight y squared plus straight z squared space minus xy space minus space yz space minus zx right parenthesis equals open parentheses 2 straight x space plus space straight y space plus space 3 straight z close parentheses open parentheses 4 straight x squared space plus space straight y squared space plus space 9 straight z squared space minus space 2 xy space minus space 3 yz space minus space 6 xz close parentheses end style
Answered by Yasmeen Khan | 04 Oct, 2018, 11:11: AM

Application Videos

Concept Videos

Multiple Choice Questions Practice Test
Answered Unanswered My Questions My Answers
CBSE 9 - Maths
the area of an equilateral triangle is 49√3 sq.cm, it's perimeter is
Asked by vijaykasaudhan913 | 10 Dec, 2023, 04:40: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Maths
find five rational number between 3/7 and 2/ 5
Asked by lalitayadav7891 | 06 Dec, 2023, 07:30: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Maths
the 12th term of the A.p 3,5,7,9..... is
Asked by pulugughahithareddy | 04 Dec, 2023, 01:33: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Maths
If (2 + sqrt(3))/(2 - sqrt(3)) + (2 - sqrt(3))/(2 + sqrt(3)) + (sqrt(3) - 1)/(sqrt(3) + 1) = a + b * sqrt(3) find the rational numbers a and b.
Asked by tobivs80000 | 02 Dec, 2023, 07:41: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Maths
ABCD is quadrilateral in which P Q R S are mid points of the sides AB BC CD DA. AC is diagonal. show that SR is parallel to AC and SR= 1half 2 AC
Asked by aksharapatni | 30 Nov, 2023, 01:12: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Maths
find the area of triangle whose sides are 40cm,24 cm,32cm?
Asked by seemarajpoot01101986 | 29 Nov, 2023, 04:40: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Maths
A,B and C are three point on a circle. Prove that the perpendicular bisector of AB , BC and CA are concurrent
Asked by vihankansara6thc37 | 27 Nov, 2023, 11:05: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Maths
2+2
Asked by sashanthaditya7718 | 23 Nov, 2023, 10:39: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Maths
(2-√3)-³ + (2+√3)-³
Asked by kumarik23731 | 22 Nov, 2023, 10:50: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Maths
A well of inner diameter 14m is dug to a depth of 15m earth taken out of it has been evenly spread all around it to a width of 7m to form an embankment.find the height of embankment so formed
Asked by sharmaakshit192009 | 19 Nov, 2023, 10:39: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt
Download FREE Sample Papers!📝- Click here
×