1. (x-2y)²+x(2x-3y) =х²-4ху+4у²+2х²-3ху=3х²-7ху+4у²
при x=0.5; y=0.1; 3*0.25-7*0.5*0.1+4*0.01=0.75-0.35+0.04=0.44
2. -4c(c-3)+(2c-1)²= -4с²+12с+4с²-4с+1=8с+1
при c=7; 8*7+1=57
3. a³*a⁷/a⁹=а
4. c³*c¹⁰/c¹¹=с²
5. c¹⁵*c¹¹/c³*c⁷=с²⁶⁻³⁺⁷=с³⁰
1. (x-2y)²+x(2x-3y) =х²-4ху+4у²+2х²-3ху=3х²-7ху+4у²
при x=0.5; y=0.1; 3*0.25-7*0.5*0.1+4*0.01=0.75-0.35+0.04=0.44
2. -4c(c-3)+(2c-1)²= -4с²+12с+4с²-4с+1=8с+1
при c=7; 8*7+1=57
3. a³*a⁷/a⁹=а
4. c³*c¹⁰/c¹¹=с²
5. c¹⁵*c¹¹/c³*c⁷=с²⁶⁻³⁺⁷=с³⁰