Advertisements
Advertisements
Question
Evaluate: (4 − ab) (8 + ab)
Sum
Solution
(4 − ab) (8 + ab) = 4 (8 + ab) − ab (8 + ab)
= 32 + 4ab − 8ab − a2b2
= 32 − 4ab − a2b2
shaalaa.com
Is there an error in this question or solution?
APPEARS IN
RELATED QUESTIONS
Expand the following, using suitable identity:
(3a – 7b – c)2
If 9x2 + 25y2 = 181 and xy = −6, find the value of 3x + 5y
If \[x - \frac{1}{x} = 5\] ,find the value of \[x^3 - \frac{1}{x^3}\]
Evaluate of the following:
(99)3
Mark the correct alternative in each of the following:
If \[x + \frac{1}{x} = 5\] then \[x^2 + \frac{1}{x^2} = \]
If a1/3 + b1/3 + c1/3 = 0, then
Use the direct method to evaluate :
(3b−1) (3b+1)
Find the squares of the following:
`(7x)/(9y) - (9y)/(7x)`
Using suitable identity, evaluate the following:
1033
Factorise the following:
25x2 + 16y2 + 4z2 – 40xy + 16yz – 20xz
