1. = (128:10 - 0,008*100):0,0625 = 12,8-0,8:0.0625 = 12-0,0625 = 11,9375
2. a) = -y^35 * y^36 = y
б) = a^8/a^20 = a^-12
3. = -1.5a^15*b^25*c^5 * 32a^4*c^6 = -48*a^19*b^25*c^11
4. -5x^2-7x+11=9+4x-5x^2
-11x+2=0
11x=2
x=2/11
5. 1) = (7^10*7^12)/7^21 = 7^22/7^21 = 7
2) = (2^10*7^10)/(2^8*7^10) = 2^2 = 4
3) = (4^6*7^4)/(7^6*4^4) = 4^2/7^2 = 16/49