I2*sqr(3)-4I+sqr(12)=4-2sqr(3)+2sqr(3)=4
(d-5)³*(d-5)⁷*)(d-5)¹⁴=(d-5)³⁺⁷⁺¹⁴=(d-5)²⁴
Ответ: (d-5)²⁴.
p/(7a-14) +(7×1)/7(2-a)=(p-7)/(7a-14)
(c×13c)/c(bm-bn) -(b×12b)/b(cn-cm)=(13c^2+12b^2)/(cbm-cbn)
(4×a^2)/(4×5(a-b)) -(5×b^2)/(5×4(a-b))=(4a^2-5b^2)/20(a-b)
A3=a1+2d
a5=a1+4d
a17=a1+16d
составляем систему:
a1+2d=7
a1+4d=1
a1=7-2d
7-2d+4d=1
2d=-6;
d=-3
a1=7+6=13
a17=13+16*(-3)=-35
Ответ: a17=-35