goldenhawk239
17.10.2019 •
Mathematics
3) let aeh. (r) be show fhat a) at at sumatric 0ata nehic quare matrik (32) let 2-arbi e c with a,belr aud i he magihan unit and define hl= 11 show thet a) v2e c-io h(ll2)- ha) ) v2.e c: v2ze c-203 hc2./2) - manc)
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Ответ:
Multiply the first, outside, inside, and last terms of the binomials.
Multiply a times a, a times -b, b times a, and b times -b.
This is the same as just squaring a and squaring b.
A shortcut is to add a squared and b squared.