a:1:{i:0;a:13:{s:2:"id";s:3:"473";s:7:"answer1";s:239:"<p><img class="latex" src="https://chart.googleapis.com/chart?cht=tx&amp;chf=a,s,000000|bg,s,FFFFFF00&amp;chl=%5Cbigwedge_x%20%5Cbigwedge_y%20x%5E2-y%5E2%20%5Cneq%20(x-y)(x%2By)" alt="\bigwedge_x \bigwedge_y x^2-y^2 \neq (x-y)(x+y)" /></p>";s:7:"answer2";s:231:"<p><img class="latex" src="https://chart.googleapis.com/chart?cht=tx&amp;chf=a,s,000000|bg,s,FFFFFF00&amp;chl=%5Cbigvee_x%20%5Cbigvee_y%20x%5E2-y%5E2%20%5Cneq%20(x-y)(x%2By)" alt="\bigvee_x \bigvee_y x^2-y^2 \neq (x-y)(x+y)" /></p>";s:7:"answer3";s:235:"<p><img class="latex" src="https://chart.googleapis.com/chart?cht=tx&amp;chf=a,s,000000|bg,s,FFFFFF00&amp;chl=%5Cbigwedge_x%20%5Cbigvee_y%20x%5E2-y%5E2%20%5Cneq%20(x-y)(x%2By)" alt="\bigwedge_x \bigvee_y x^2-y^2 \neq (x-y)(x+y)" /></p>";s:7:"answer4";s:235:"<p><img class="latex" src="https://chart.googleapis.com/chart?cht=tx&amp;chf=a,s,000000|bg,s,FFFFFF00&amp;chl=%5Cbigvee_x%20%5Cbigwedge_y%20x%5E2-y%5E2%20%5Cneq%20(x-y)(x%2By)" alt="\bigvee_x \bigwedge_y x^2-y^2 \neq (x-y)(x+y)" /></p>";s:7:"answer5";s:0:"";s:7:"answer6";s:0:"";s:7:"answer7";s:0:"";s:7:"answer8";s:0:"";s:7:"answer9";s:0:"";s:8:"answer10";s:0:"";s:4:"good";s:10:"0100000000";s:8:"question";s:4:"1733";}}