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Recent questions tagged rational expression
+1
vote
1
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Simplify the expression and find its value when a = 5 and b = - 3 : 2 (a^2 + ab ) + 3 - ab
asked
Apr 7, 2019
by
kratos
algebraic expressions
rational expression
class-8
class-6
basics of boolean algebra
numbers
polynomials
rational expressions
+2
votes
1
answer
If x + y + z = 0, show that x^3 + y^3 + z^3 - 3xyz
asked
Mar 11, 2019
in
Mathematics
by
kratos
rational expression
class-8
maths
class-9
polynomials
+2
votes
1
answer
If x + y + z = 0, show that x^3 + y^3 + z^3 = 3xyz.
asked
Feb 20, 2019
in
Mathematics
by
kratos
rational expression
class-8
partial derivatives
maths
class-9
class-12
polynomials
differentials
+2
votes
1
answer
Two polynomials p (x) and q (x) have H.C.F. x (x + a) and L.C.M. = 12x^2 (x + a) (x^2 – a). If p(x) = 4x^2 (x + a)^2 find q (x).
asked
Jan 27, 2019
in
Class 10
by
kratos
factorisation
rational expression
algebra
class-8
factorization
class-10
polynomials
+2
votes
1
answer
Simplify : (3x + 4)^3 - (3x - 4)^3 .
asked
Jan 22, 2019
in
Class 9
by
kratos
rational expression
class-8
class-9
polynomials
rational expressions
+1
vote
1
answer
f(x) = 4x^3 + 8x^2 + 8x + 7, g(x)= 2x^2 – x + 1.
asked
Nov 5, 2018
in
Class 10
by
kratos
rational expression
class-8
class-9
class-10
polynomials
+3
votes
1
answer
Verify that : x^3 + y^3 + z^3 - 3xyz = 1/2(x + y + z)[(x - y)^2 + (y - z)^2 + (z - x)^2]
asked
Oct 23, 2018
in
Mathematics
by
kratos
rational expression
class-8
maths
class-9
polynomials
+1
vote
1
answer
Using properties of determinants, prove that |(1,1,1+3x)(1+3y,1,1)(1,1+3z,1)| = 9(3xyz+xy+yz+zx)
asked
Oct 17, 2018
in
Class 12
by
kratos
rational expression
cbse
determinant
class-8
class-9
algebraic identities
determinants
class-12
polynomials
+2
votes
1
answer
f(x) = 15x^3 – 20x^2 + 13x – 12, g(x) = x^2 – 2x + 2
asked
Sep 5, 2018
in
Class 10
by
kratos
rational expression
class-8
class-9
class-10
polynomials
+1
vote
1
answer
If ax = by = cz, prove that x^2/yz +y^2/zx +z^2/xy = bc/a^2 +ca/b^2 +ab/c^2.
asked
Jul 23, 2018
in
Class 12
by
kratos
rational expression
ratio and proportion
determinant
class-8
cbse
class-9
class-10
icse
class-12
polynomials
+1
vote
1
answer
If x + y + z = 8 and xy + yz+ zx = 20, find the value of x^3 + y^3 + z^3 – 3xyz.
asked
May 13, 2018
in
Class 12
by
kratos
algebraic expressions
rational expression
cbse
class-8
class-9
algebraic identities
class-12
polynomials
+3
votes
1
answer
Simplify: (a^2-b^2)^3 + (b^2-c^2)^3 + (c^2-a^2)^3/(a-b)^3+(b-c)^3+(c-a)^3
asked
May 10, 2018
in
Class 9
by
kratos
rational expression
class-8
class-9
polynomials
rational expressions
+2
votes
1
answer
Calculate the unit vector, which is normal to the surface ϕ = x^2y + xy^2 + 3xyz at the point (1, 1, –1).
asked
Apr 30, 2018
in
Class 12
by
kratos
rational expression
cbse
class-8
class-9
algebraic identities
class-12
polynomials
+3
votes
1
answer
Prove that a^2 + b^2 + c^2 - ab - bc - ca =1/2[(a-b)^2+ (b-c)^2 + (c-a)^2].
asked
Apr 29, 2018
in
Class 12
by
kratos
rational expression
class-8
cross product
class-9
class-12
vector
polynomials
+3
votes
1
answer
If a + b + c = 9 and ab + bc + ac = 26, find the value of a^3 + b^3 + c^3 - 3abc.
asked
Feb 6, 2018
in
Class 10
by
kratos
rational expression
class-8
class-9
algebraic identities
class-10
polynomials
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