Login
Remember
Register
Home
All Activity
Q&A
Questions
Hot!
Unanswered
Tags
Categories
Users
Ask a Question
Ask a Question
Show that. `(a – b) (a + b) + (b – c) (b + c) + (c – a) (c + a) =
0
votes
asked
Jan 17, 2022
in
8th-maths
by
purvi
(
1.8k
points)
Show that.
`(a – b) (a + b) + (b – c) (b + c) + (c – a) (c + a) = 0`
marks2
chapter9
#sub
Please
log in
or
register
to answer this question.
0
Answers
Categories
All categories
Maths
(8.6k)
12th-maths
(0)
11th-maths
(0)
10th maths
(0)
9th-maths
(0)
8th-maths
(8.6k)
Science
(14)
Physics
(3.4k)
Related questions
Show that. `(a – b) (a + b) + (b – c) (b + c) + (c – a) (c + a) =
Show that. `(a – b) (a + b) + (b – c) (b + c) + (c – a) (c + a) =
A gravitational lens may be assumed to have a varying width of the form Show that an observer will see an image of a point object as aring about the center of the lens with an angular radius`W(b)=k_1` ln `k_2/b`
An average urban Indian uses about 150 litres of water every day. Activity Litres per person per day. Drinking 3 Cooking 4 Bathing 20 Sanitation 40 Washing clothes 40 Washing utensils 20 Gardening 23 _______________ Total 150 ________________ (a) What per cent of water is used for bathing and sanitation together per day? (b) How much less per cent of water is used for cooking in comparison to that used for bathing? (c) What per cent of water is used for drinking, cooking and gardening
An average urban Indian uses about 150 litres of water every day. Activity Litres per person per day. Drinking 3 Cooking 4 Bathing 20 Sanitation 40 Washing clothes 40 Washing utensils 20 Gardening 23 _______________ Total 150 ________________ (a) What per cent of water is used for bathing and sanitation together per day? (b) How much less per cent of water is used for cooking in comparison to that used for bathing? (c) What per cent of water is used for drinking, cooking and gardening