Решите уравнение:
а) √х²+7х+1 = х-1
б) √х²-6х+2 = х+5
под корнем √х²+7х+1 и √х²-6х+2
а) √х²+7х+1 = х-1
б) √х²-6х+2 = х+5
под корнем √х²+7х+1 и √х²-6х+2
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Verified answer
А) x²+7x+1=x²-2x+1x²+7x+1-x²+2x-1=0
9x=0
x=0
б) x²-6x+2=x²+10x+25
x²-6x+2-x²-10x-25=0
-16x-23=0
-16x=23
x=-23/16