Simplify:
Simplify:
S.E.E. Solution
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Soln:
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Q.Factorize: (a^2 - 1)(b^2-1) + 4ab?
(a^2-1)(b^2-1)+4ab
= a^2 b^2 - a^2 - b^2 +1+ 4ab
Now break 4ab into 2ab+2ab
= a^2 b^2 - a^2 - b^2 +1+ 2ab ... 
A computer was bought for Rs. 44100. Its value is reduced by Rs. 4100 in 2 years, find the rate of depreciation.
Soln:
... - A card is drawn randomly from the pack of 52 cards and a dice is thrown once. Determine the probability of not getting a club or not getting 6 on the dice.
Soln:
probability that it will not be a club = 39/52 = 3/4
probability that it will not be 6 in the dice = 5/6
probability of not ...
Q. In the given triangle ABC, AD is perpendicular to BC, and CE is perpendicular to AB. Prove that angle BDE = angle BAC.
Soln:
i) ACDE is a cyclic quadrilateral.
i) ÐAEC = ÐADC = 90 degree (Angles in the same segment of a circle ... - Q. Find the L.C.M. of y^7-1/y^5 and y^4+1+1/y^4
Soln:
...
