Questions by purvi

0 votes

0 answers

Verify the following: `(a^2 – b^2) (a^2 + b^2) + (b^2 – c^2) (b^2 + c^2) + (c^2 – a^2) + (c^2 + a^2) =

asked Jan 17, 2022 in 8th-maths

0 votes

0 answers

Verify the following:

asked Jan 17, 2022 in 8th-maths

0 votes

0 answers

Subtract `b (b^2 + b – 7) + 5` from `3b^2 – 8` and find the value of expression obtained for `b = –

asked Jan 17, 2022 in 8th-maths

0 votes

0 answers

Take suitable number of cards given in the adjoining diagram [G`(x xx x)` representing `x^2`, R `(x xx 1)` representing x and Y `(1 xx 1)` representing 1] to factorise the following expressions, by arranging the cards in the form of rectangles: (i) `2x^2 + 6x + 4` (ii) `x^2 + 4x + 4`. Factorise `2x^2 + 6x + 4` by using the figure.

asked Jan 17, 2022 in 8th-maths

0 votes

0 answers

The multiplicative inverse of `10^(–100)`

asked Jan 17, 2022 in 8th-maths

0 votes

0 answers

`((-7)/5)^(-1)` is equal

asked Jan 17, 2022 in 8th-maths

0 votes

0 answers

`(3/4)^5 -: (5/3)^5` is equal

asked Jan 17, 2022 in 8th-maths

0 votes

0 answers

Which of the following is not the reciprocal of `(2/3)^4`

asked Jan 17, 2022 in 8th-maths

0 votes

0 answers

The value of `(1/2^3)^2` is equal to

asked Jan 17, 2022 in 8th-maths

0 votes

0 answers

Very large numbers can be expressed in standard form by using _________

asked Jan 17, 2022 in 8th-maths

0 votes

0 answers

Find the value `[4^(–1) +3^(–1) +

asked Jan 17, 2022 in 8th-maths

0 votes

0 answers

`[2^(–1) + 3^(–1) + 4^(–1)]^0` =

asked Jan 17, 2022 in 8th-maths

0 votes

0 answers

The usual form of `2.39461 xx 10^6` is

asked Jan 17, 2022 in 8th-maths

0 votes

0 answers

The standard form for 0.000000008 is

asked Jan 17, 2022 in 8th-maths

0 votes

0 answers

By solving `(6^0 – 7^0) xx (6^0 + 7^0)` we get

asked Jan 17, 2022 in 8th-maths

0 votes

0 answers

asked Jan 17, 2022 in 8th-maths

0 votes

0 answers

`(–7)^(–4) xx (–7)^2 =

asked Jan 17, 2022 in 8th-maths

0 votes

0 answers

The expontential form for `(–2)^4 xx (5/2)^4` is

asked Jan 17, 2022 in 8th-maths

0 votes

0 answers

Express as a power of a rational number with negative exponent. (a) `(((-3)/2)^(-2))^(-3)` (b) `(2^5 -: 2^8) xx

asked Jan 17, 2022 in 8th-maths

0 votes

0 answers

Simplify: -1. `(((-)/2)^(-2))^3 xx (1/3)^(-4) xx 3^(-1) xx

asked Jan 17, 2022 in 8th-maths

Page:

« prev
1
...
34
35
36
37
38
39
40
...
44
next »