1942 June 17 Convoy PQ-17 leaves Iceland for Murmansk – massive casualties from German onslaught during the trip. July 5 10 out of 27 ships reach Murmansk.
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<math>x^2+\frac{b}{a}x=-\frac{c}{a}.</math>
The equation is now in a form in which we can conveniently complete the square[?]. To "complete the ...