1. 8*x<64, x<64/8, x<8
2. 72/a>9, a<72/9, a<8
3. x+64<65, x<65-64, x<1
3) has
4) waters
4) dances, is dancing, is having
5) hope
6) are sitting
7) is, is tasting
8) are you peeping
9) feels
10) is Ann doing, she is having
11) I don't have, I have
12) He doesn't have, he has
13) is coming
14) am not listening
15) is creeping
-24ab+3(16a^2+8ab+b^2)=<u>-24ab</u>+48a^2<u>+24ab</u>+3b^2=48a^2+3b^2
при а = корень из 7, b = корень из 3:
корень из 7 в квадрате это число под корнем, т.е 7
корень из 3 в квадрате это число под корнем, т.е 3
48*7+3*3=336+9=345