<p>Hi, i had some questions on the blue book's math sections:
-p. 400 #18
-p. 587 #19
-p. 596 #8
-p. 674 #19
-p. 779 #15 (is there way other than just guess and checking?)</p>
<p>Basically i want to learn the fastest way to solve this and it would be nice if you would include both ALGEBRAIC AND FAST SOLUTIONS.
please post the solutions as the response. Thank you.</p>