Ac+1/2ac=42 ac[1+1/2]=42 ac=42:3/2=28
4ˣ (x*4ˣ⁻¹)*x² -2x*4ˣ
f⁾(x)=( ----- )⁾ = ------------------------
x² x⁴
-1* (1/16) *1 +2*(1/4) -(1/16) + 1/2
f⁾(-1)= ------------------------------- = ------------------- = 7/16
-1⁴ 1
3^2*25^4/(5^10*2^2) = 3^2*5^8/(5^10*2^2)=3^2/(5^2*2^2)=9/100=0,09
3х-6=х+2
3х-х=6+2
2х=8
х=4
проверка :
3(4-2)=4+2
3*2=4+2
6=6