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(√46 + 6)² = (√46)²+√46 *6*2+36= 46+√46* 12 +36 =80+12*√<span>46</span>
−1,25x+58xy2+48xy2=−1,25*2+58*2*(0,1)^2+48*2*(0,1)^2=-2,5+1,16+0,96=-0,38
1) 5=1,25×3-5
5=3,75-5
5=-1,25
Неверно
2)
-20=1,25×20-5
-20=25-5
-20=20
Неверно