Latest TCS Aptitude Question SOLUTION: (209*144)^2 + 209*209+ 144*144+ 209*144 = ?

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(209*144)^2 + 209*209+ 144*144+ 209*144 = ?

Asked In TCS anilchaudhary (11 years ago)

Solved Garima Read Solution (5)

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Garima  (11 years ago)

905863729


(209*144)^2 + (209*209)+(209*144)+(144*144)= S
let 144 =X and 209 = Y
then the above equation will be
(XY)^2 + Y^2 + XY + X^2 = (X+Y)^2 - XY +(XY)^2
= (X+Y)^2 + XY( XY -1)
putting values of x and y,
= (144+209)^2 + 144*209(144*209 - 1)
= 353^2 + 30096*30095
=124609 + 905739120
=905863729

Is this solution Helpfull? Yes (18) | No (3)  

rajendrasinh parmar  (11 years ago)

suppose x=209 and y=144

so (209*144)^2 + 209*209+ 144*144+ 209*144 = (x*y)^2 + x^2 + y^2 + x*y
=X^2 + 2*x*y + y^2 + (x*y)^2 - x*y
=(x+y)^2 + (x*y)(x*y - 1)
=(209 + 144)^2 + (209*144)(209*144 - 1)
=(353)^2 + (30096)(30095)
=905863729

Is this solution Helpfull? Yes (5) | No   

swati  (11 years ago)

first we solve (209*144)^2+209*209+144*144
it is a formula (a+b)^2=a^2+b^2+2ab so (209+144)^2
now it will be (209+144)^2+ 209*144
=124609+ 30096=154705
ans:154705

Is this solution Helpfull? Yes (1) | No (14)  

ankit singh  (11 years ago)

(209*144)^2 + (209*209+ 144*144+ 209*144 )
(a+b)^2=a^2+b^2+2ab
(209*144)^2+(209+144)^2
905769216+124609=905893825
ans is 905893825

Is this solution Helpfull? Yes | No (4)  

mayur   (11 years ago)

calculator is allow na in written exam ????

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