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vlogize
Convert a C++ string to const char* for strcat
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Janusz
办美国文凭加拿大文凭澳洲文凭英国文凭学位证毕业证成绩单
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![Compute the following : [[a^2+b^2, b^2+c^2], [a^2+c^2, a^2+b^2]] + [[2ab, 2bc], [-2ac, -2ab]]](http://i.ytimg.com/vi/UjN-EFj-UnI/mqdefault.jpg "Compute the following : [[a^2+b^2, b^2+c^2], [a^2+c^2, a^2+b^2]] + [[2ab, 2bc], [-2ac, -2ab]]")
![Compute the following: `[[a^2+b^2, b^2+c^2],[a^2+c^2, a^2+b^2]]`+`[[2ab,2bc],[-2ac,-2ab]]`](http://i.ytimg.com/vi/17ua1xYQays/mqdefault.jpg "Compute the following: `[[a^2+b^2, b^2+c^2],[a^2+c^2, a^2+b^2]]`+`[[2ab,2bc],[-2ac,-2ab]]`")
![[Math] Convert (BADFACED) from its hexadecimal expansion to its binary expansion.](http://i.ytimg.com/vi/fnLdJm3yqNo/mqdefault.jpg "[Math] Convert (BADFACED) from its hexadecimal expansion to its binary expansion.")
![[Math] Convert the hexadecimal expansion of each of these integers to a binary expansion.](http://i.ytimg.com/vi/lMUwU8xK7do/mqdefault.jpg "[Math] Convert the hexadecimal expansion of each of these integers to a binary expansion.")
