Ask your own question, for FREE!
Mathematics 28 Online
OpenStudy (anonymous):

hI... how to proof (AXB).(CXD)+(BXC).(AXD)+(CXA).(BXD)=0

OpenStudy (shadowfiend):

Hm. Are you trying to prove that without any information at all about A, B, C, and D?

OpenStudy (anonymous):

Distribute terms AC+AD+BC+BD+AB+BD+AC+CD+BC+CD+AB+AD=0 2AC+2AD+2BC+2BD+2AB+2CD=0 AC+AD+BC+BD+AB+CD=0 At this point, it depends on the values or restrictions on A, B, C, and D

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Latest Questions
unknownnnnnn: The Devil That Stays Quiet.... Thereu2019s a devil inside me, but it isnu2019t fire or chaos.
4 hours ago 4 Replies 0 Medals
unknownnnnnn: Bored Enough to Stop Wanting..... Iu2019m not sad in a dramatic way. No storms, no shattered rooms.
15 hours ago 5 Replies 0 Medals
penguin: Running, running far away. Escaping dreams of yesterday. Faster, faster there I go.
16 hours ago 6 Replies 4 Medals
penguin: The hardest thing I'll ever do Is let go of you And look forward instead of back at my past.
22 hours ago 0 Replies 0 Medals
penguin: The hardest thing I'll ever do Is let go of you And look forward instead of back at my past.
22 hours ago 0 Replies 0 Medals
penguin: The hardest thing I'll ever do Is let go of you And look forward instead of back at my past.
22 hours ago 0 Replies 0 Medals
seeker: I once believed that if you exist, then grace itself exists, if you remain in my thoughts, what power has sorrow or poison over me? From your face, all the
22 hours ago 19 Replies 0 Medals
unknownnnnnn: The Space Between Breaths... Night doesnu2019t rush me. It waits. Like it knows Iu2019ll eventually start thinking about everything I almost said and the th
22 hours ago 1 Reply 0 Medals
676767: If words could paint the blush I feel inside, I'd write a sonnet just to tell you trueu2014 How every glance you cast, each smile you hide, Ignites a secret
1 day ago 6 Replies 0 Medals
unknownnnnnn: Static at 2 A.M. My mind doesnu2019t knock. It rearranges the furniture at 2 a.m., asks me to notice every creak. I lie still like that might help, like silence is a language my thoughts forgot. They line up with receipts, proof of moments I replayed too many times to pretend they were accidents. Iu2019m fluent in overthinking itu2019s the only subject I never skipped. I can turn one sentence into a courtroom drama, cross-examine my tone, convict myself without witnesses. People call me u201cstrongu201d because I donu2019t spill. They donu2019t see the cup shaking in my hands, how much effort it takes to keep the surface calm. Confidence comes in phases. Some days it fits like skin. Some days itu2019s a costume I forget Iu2019m wearing until it starts to pinch. I laugh on cue. I answer u201cfineu201d with convincing timing. Iu2019ve learned where to pause, how long eye contact should last, how not to sound like a question when Iu2019m one. The past isnu2019t loud. It doesnu2019t need to be. It just clears its throat at the wrong moments, reminds me what I already survived and what might try again. But hereu2019s the part I donu2019t downplay I stay. Even when my thoughts argue in circles, even when doubt files appeals. I choose presence over perfection. Breath over escape. I donu2019t win every round, but I donu2019t forfeit myself either. I am not the static. I am the one listening, deciding what deserves a response and what can fade without taking my name with it.
1 day ago 2 Replies 0 Medals
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!