Advertisements
Advertisements
Question
Evaluate: (6 − 5xy) (6 + 5xy)
Sum
Advertisements
Solution
(6 − 5xy) (6 + 5xy)
= (6)2 − (5xy)2
= 36 − 25x2y2 .........[ ∵ (a − b) (a + b) = a2b2]
shaalaa.com
Is there an error in this question or solution?
APPEARS IN
RELATED QUESTIONS
Factorise the following using appropriate identity:
`x^2 - y^2/100`
Verify that `x^3+y^3+z^3-3xyz=1/2(x+y+z)[(x-y)^2+(y-z)^2+(z-x)^2]`
If 2x+3y = 13 and xy = 6, find the value of 8x3 + 27y3
If 3x − 2y = 11 and xy = 12, find the value of 27x3 − 8y3
Evaluate of the following:
(9.9)3
Find the following product:
(3x + 2y + 2z) (9x2 + 4y2 + 4z2 − 6xy − 4yz − 6zx)
If `"r" - (1)/"r" = 4`; find: `"r"^2 + (1)/"r"^2`
Which one of the following is a polynomial?
Using suitable identity, evaluate the following:
9992
Expand the following:
`(1/x + y/3)^3`
