Which of the following steps in this proof contains a flaw? A. step 3 (incorrect multiplicative inverse) B. step 4 (subtracted wrong expression) C. step 5 (factored incorrectly) D. step 6 (factored difference of two squares incorrectly)

Question

Which of the following steps in this proof contains a flaw?      	   	   	   	   	   	   	   	   	       A. step 3 (incorrect multiplicative inverse)    B. step 4 (subtracted wrong expression)    C. step 5 (factored incorrectly)    D. step 6 (factored difference of two squares incorrectly)

jigglypuff314 · Answer

Hello and Welcome to OpenStudy! :)

could you show the proof that you are asking about?

anonymous · Answer

http://static.k12.com/bank_packages/files/media/mathml_8b2979ca0ce50eee86f21703746098089d22116b_1.gif

jigglypuff314 · Answer

hmm, that does not seem to be the correct link? could you try again?

anonymous · Answer

im trying its my first time today

anonymous · Answer

http://static.k12.com/bank_packages/files/media/mathml_ff23ec9cb342af47664eb55731cbbce8a06e9ef2_1.gif

anonymous · Answer

http://static.k12.com/bank_packages/files/media/mathml_4cb2179e65bf16bff8f75064e511d6286ff93115_1.gif

anonymous · Answer

http://static.k12.com/bank_packages/files/media/mathml_47a1c2381baacaf24e39956af5b9b7b6b397a22c_1.gif

anonymous · Answer

thats a lot of them it wont let me do it in a full pic

jigglypuff314 · Answer

hmm... could you state what the problem was in the first step?

anonymous · Answer

http://static.k12.com/bank_packages/files/media/mathml_d6ce276bb696d24b7d46a19899c6ffca951ddf92_1.gif

anonymous · Answer

are you there

jigglypuff314 · Answer

hmmm... I am slightly confused gimme a sec...

jigglypuff314 · Answer

the step after http://static.k12.com/bank_packages/files/media/mathml_4cb2179e65bf16bff8f75064e511d6286ff93115_1.gif would be indeed a multiplicative identity because a^6 * 1 = a^6 so it can Not be A

anonymous · Answer

sorry here are the ones i need to know

anonymous · Answer

http://static.k12.com/bank_packages/files/media/mathml_ff23ec9cb342af47664eb55731cbbce8a06e9ef2_1.gif

anonymous · Answer

http://static.k12.com/bank_packages/files/media/mathml_8b2979ca0ce50eee86f21703746098089d22116b_1.gif

anonymous · Answer

http://static.k12.com/bank_packages/files/media/mathml_72f2c4eb6327f2792e83c1fbc1c50b9d0a74887b_1.gif

anonymous · Answer

http://static.k12.com/bank_packages/files/media/mathml_73b85d7243ec7a0fc86597c02b396cde5d5c70b9_1.gif

anonymous · Answer

those are the 4 i need to know about

anonymous · Answer

are you there

jigglypuff314 · Answer

I would guess that it went wrong at the multiplicative inverse property, because I have no idea how they could/would have done that...
sorry that I can't be of more help :/

anonymous · Answer

thanks