Advertisements
Advertisements
Question
Find the square of `2"m"^2-2/3"n"^2`
Sum
Advertisements
Solution
`2"m"^2-2/3"n"^2`
`(2"m"^2-2/3"n"^2)^2=(2"m"^2)^2+(2/3"n"^2)^2-2xx2"m"^2xx2/3"n"^2`
`=4"m"^4+4/9"n"^4-8/3"m"^2"n"^2`
shaalaa.com
Important Formula of Expansion
Is there an error in this question or solution?
APPEARS IN
RELATED QUESTIONS
Expand : (a−b+c)2
Expand : `(2"x"-1/(2"x"))^2`
Find the square of `"5a"/"6b"-"6b"/"5a"`
Find the square of `8"x"+3/2"y"`
If `"a" +1/"a"=2`, find : `"a"^2+1/"a"^2`
If `"a" +1/"a"=2`, find: `"a"^4+1/"a"^4`
If `"m" -1/"m"=5`, find : `"m"^2+1/"m"^2`
If `"m" -1/"m"=5`, find: `"m"^4+1/"m"^4`
If a2 + b2 = 41 and ab = 4, find : a + b
Expand : (3x – 4y + 5z)2
