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Re: 15^2 - 63^2 + 27^2 - 22^2 + (54)(15) + (44)(63)= [#permalink]
1
Kudos
Shouldn't it be 83?
(27+15)^2 - (63-22)^2 = 42^2 - 41^2 (42+41)*(42-41) = 83*1 = 83.

Posted from my mobile device
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Re: 15^2 - 63^2 + 27^2 - 22^2 + (54)(15) + (44)(63)= [#permalink]
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VigneshReddy wrote:
Shouldn't it be 83?
(27+15)^2 - (63-22)^2 = 42^2 - 41^2 (42+41)*(42-41) = 83*1 = 83.

Posted from my mobile device


So, adding 42 and 41 was my downfall! Ha!!
Thanks for the heads up!
I've edited my solution.
Kudos for you!!

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Re: 15^2 - 63^2 + 27^2 - 22^2 + (54)(15) + (44)(63)= [#permalink]
1
Kudos
Option B says 63, shouldn't it be 83 ?

Thanks,
K
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Re: 15^2 - 63^2 + 27^2 - 22^2 + (54)(15) + (44)(63)= [#permalink]
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mehro023 wrote:
Option B says 63, shouldn't it be 83 ?

Thanks,
K


Is that you, Karaan?
Good catch!! I changed the number in my solution, but not in the original question.
My bad.

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Re: 15^2 - 63^2 + 27^2 - 22^2 + (54)(15) + (44)(63)= [#permalink]
GMATPrepNow

Yes, it is me :)
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Re: 15^2 - 63^2 + 27^2 - 22^2 + (54)(15) + (44)(63)= [#permalink]
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mehro023 wrote:
GMATPrepNow

Yes, it is me :)


Hmm, that smiley face looks a bit like you, but I thought you had more hair!
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Re: 15^2 - 63^2 + 27^2 - 22^2 + (54)(15) + (44)(63)= [#permalink]
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GMATPrepNow wrote:
mehro023 wrote:
GMATPrepNow

Yes, it is me :)


Hmm, that smiley face looks a bit like you, but I thought you had more hair!


Yeesh, I thought I had more hair . . . until noticed my avatar staring back at me :cry:
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Re: 15^2 - 63^2 + 27^2 - 22^2 + (54)(15) + (44)(63)= [#permalink]
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Re: 15^2 - 63^2 + 27^2 - 22^2 + (54)(15) + (44)(63)= [#permalink]
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