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Expand the following, using suitable identities. (2x – 5y) (2x –
asked
Jan 18, 2022
in
8th-maths
marks2
chapter9
#sub
0
votes
0
answers
Factorise the following expressions. `6ab +
asked
Jan 18, 2022
in
8th-maths
marks3
chapter9
#sub
0
votes
0
answers
Factorise the following expressions. `3pqr –6p^2q^2r^2 –
asked
Jan 18, 2022
in
8th-maths
marks3
chapter9
#sub
0
votes
0
answers
Factorise the following expressions. `x^3y^2 + x^2y^3 – xy^4 +
asked
Jan 18, 2022
in
8th-maths
marks3
chapter9
#sub
0
votes
0
answers
Factorise the following expressions. `y^2 + 8zx – 2xy –
asked
Jan 18, 2022
in
8th-maths
marks3
chapter9
#sub
0
votes
0
answers
Factorise the following using the identity `a^2 – b^2 = (a + b) (a – b)`.
asked
Jan 18, 2022
in
8th-maths
marks3
chapter9
#sub
0
votes
0
answers
The following expressions are the areas of rectangles. Find the possible lengths and breadths of these rectangles. `x^2 + 19x –
asked
Jan 18, 2022
in
8th-maths
marks3
chapter9
#sub
0
votes
0
answers
The following expressions are the areas of rectangles. Find the possible lengths and breadths of these rectangles. `17ab^2c^3 -:
asked
Jan 18, 2022
in
8th-maths
marks3
chapter9
#sub
0
votes
0
answers
If x – y = 13 and xy = 28, then find `x^2 +
asked
Jan 18, 2022
in
8th-maths
marks3
chapter9
#sub
0
votes
0
answers
Verify the following:
asked
Jan 18, 2022
in
8th-maths
marks3
chapter9
#sub
0
votes
0
answers
Find the value of a, if `pqa = (3p + q)^2 – (3p –
asked
Jan 18, 2022
in
8th-maths
marks3
chapter9
#sub
0
votes
0
answers
The human body has about 100 billion cells. This number can be written in exponential form
asked
Jan 18, 2022
in
8th-maths
marks1
chapter8
#mcq
0
votes
0
answers
The distance between earth and sun is 150 million kilometres which can be written in exponential form as
asked
Jan 18, 2022
in
8th-maths
marks1
chapter8
#fib
0
votes
0
answers
`3^(–2)` can be written
asked
Jan 18, 2022
in
8th-maths
marks1
chapter8
#mcq
0
votes
0
answers
The usual form for `2.03 xx
asked
Jan 18, 2022
in
8th-maths
marks1
chapter8
#mcq
0
votes
0
answers
`(1/10)^0` is equal
asked
Jan 18, 2022
in
8th-maths
marks1
chapter8
#mcq
0
votes
0
answers
`10^(–2) =
asked
Jan 18, 2022
in
8th-maths
marks1
chapter8
#tnf
0
votes
0
answers
`5^0 =
asked
Jan 18, 2022
in
8th-maths
marks1
chapter8
#tnf
0
votes
0
answers
Large numbers can be expressed in the standard form by using positive
asked
Jan 18, 2022
in
8th-maths
marks1
chapter8
#tnf
0
votes
0
answers
Find the product of the cube of (–2) and the square of
asked
Jan 18, 2022
in
8th-maths
marks2
chapter8
#sub
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