8. 8.8
10) ab • ab • ab : ab: ab : ab : ab;
11) (a + b) : (a + b) : (a + b)(a + b);
9) x *x *x * x *x *x *x* x* x;
12) (х - у) - (х - у) - (х - у).
10) ab • ab • ab : ab: ab : ab : ab;
11) (a + b) : (a + b) : (a + b)(a + b);
9) x *x *x * x *x *x *x* x* x;
12) (х - у) - (х - у) - (х - у).
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11) 1/(а+б)^2
9)х^10
12)-х+у