<span><span>1) √(21)</span></span><span> = </span><span>4,58257569496</span>
<span><span> √(14)</span></span><span> = </span><span>3,74165738677</span>
<span><span> √(6)</span></span><span> = </span><span>2,44948974278</span>
A) 5*(12,8+3,4)= 5*16,2= 81.
б)43,6 - (12,6 + 3,4)= 43,6 - 16,2= 27,4
в) (12,8+8,2)*( 12,8 - 8,2)= 21* 4,6=96,6
(b+4)¹¹×(b+4)^5×(b+4)^5×(b+4)^6=<span>(b+4)^27</span>
(х+10)^2=(2-х)^2
х^2+20х+100=4-4х+х^2
24х=-96
х=-4