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The sum of (x + 5) observations is `x^4 – 625`. Find the mean of the
asked
Jan 17, 2022
in
8th-maths
marks3
chapter9
#sub
0
votes
0
answers
If m – n = 16 and `m^2 + n^2 = 400`, then find
asked
Jan 17, 2022
in
8th-maths
marks3
chapter9
#sub
0
votes
0
answers
Verify the following: `(a + b) (a + b) (a + b) = a^3 + 3a^2b + 3ab^2 +
asked
Jan 17, 2022
in
8th-maths
marks3
chapter9
#sub
0
votes
0
answers
Verify the following: `(5x + 8)^2 – 160x = (5x –
asked
Jan 17, 2022
in
8th-maths
marks3
chapter9
#sub
0
votes
0
answers
What should be added to `4c (– a + b + c)` to obtain `3a (a + b + c) – 2b(a – b +
asked
Jan 17, 2022
in
8th-maths
marks3
chapter9
#sub
0
votes
0
answers
The product of two expressions is `x^5 + x^3 + x`. If one of them is `x^2 + x+ 1`, find the
asked
Jan 17, 2022
in
8th-maths
marks3
chapter9
#sub
0
votes
0
answers
`(-4)^4 xx(5/4)^4`
asked
Jan 17, 2022
in
8th-maths
marks1
chapter8
#fib
0
votes
0
answers
`(2^-3)^2 xx (3^-2)^3`
asked
Jan 17, 2022
in
8th-maths
marks1
chapter8
#fib
0
votes
0
answers
`((-7)/5)^(-1)` is equal
asked
Jan 17, 2022
in
8th-maths
marks1
chapter8
#mcq
0
votes
0
answers
The value of `(7^(–1) – 8^(–1))^(–1) – (3^(–1) – 4^(–1))^(–1)`
asked
Jan 17, 2022
in
8th-maths
marks1
chapter8
#mcq
0
votes
0
answers
The usual form for `2.03 xx
asked
Jan 17, 2022
in
8th-maths
marks1
chapter8
#mcq
0
votes
0
answers
The value of `(1/2^3)^2` is equal to
asked
Jan 17, 2022
in
8th-maths
marks1
chapter8
#fib
0
votes
0
answers
If `36 = 6 xx 6 = 62`, then `1/36` expressed as a power with the base 6 is
asked
Jan 17, 2022
in
8th-maths
marks1
chapter8
#fib
0
votes
0
answers
By multiplying `(5/3)^4` by ________ we get
asked
Jan 17, 2022
in
8th-maths
marks1
chapter8
#fib
0
votes
0
answers
The value of `[2^(–1) xx 3^(–1)]^(–1)` is
asked
Jan 17, 2022
in
8th-maths
marks1
chapter8
#fib
0
votes
0
answers
`329.25 = 3 xx 10^2 + 2 xx 10^1 + 9 xx 10^0 + 2 xx 10^–1 + 5 xx
asked
Jan 17, 2022
in
8th-maths
marks1
chapter8
#tnf
0
votes
0
answers
`(–4)^(–4) xx (4)^(–1) =
asked
Jan 17, 2022
in
8th-maths
marks1
chapter8
#tnf
0
votes
0
answers
If `53^(x–1) -: 25 = 125`, find the value of
asked
Jan 17, 2022
in
8th-maths
marks2
chapter8
#sub
0
votes
0
answers
Find x so that `(2/9)^3 xx (2/9)^(-6) =
asked
Jan 17, 2022
in
8th-maths
marks2
chapter8
#sub
0
votes
0
answers
`(2^n xx 2^6)/2^(-13) =
asked
Jan 17, 2022
in
8th-maths
marks2
chapter8
#sub
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