1,
1) = 49
2) √64 = 8
3) =36*5 = 180
4) = 16
5) √49 = 7
6) 25*3 = 75
7) √256 = 16
8) - √144 = -12
9) 9*5 = 45
10) -6 - 9 = - 15
11) 0,7 + 0,1 = 0,8
12) 0,01 *20 = 0,2
2.
а) = √9*2 = 3*√2
в) = √25*2 = 5√2
с) = √16*3 = 4*√3
3,
а) √200 = 10*√2
б) 15*t
в) 5*r*√3*q*r
г) √ b/5 /a²
д) 12*√2*√7
е)45*q²*√q
ж) 7*3*m*√7p = 21*m*√7p
з) d/√2 = d*√2/2
4.
a) 5*0.5 - 0.2*12 = 2.5 - 2.4 = 0.1
b) 0.1*20 + 0.8*1/4 = 2 + 0.2 = 2.2
c) 7*√2 + 4*√2 +5*√2 - 10*√2 = (7+4+5-10)*√2 = 6*√2
5.
4 < √22 < 5 (16 < 22 < 25)<br>11< √123 < 12 (121 < 123 < 144)<br>9 < √92 < 10 (81 < 92< 100)<br>7 < √54 < 8 (49 < 54 < 64)<br>3 < √11 < 4 (9 < 11 < 16)<br>31 < √1001 < 32 (961< 1001 < 1024)<br>