A) (3+2x)^2+4=0
9+12x+4x^2+4=0
4x^2+12x+13=0
Д=/144–4*4*13<0 решения нет<br>
б) (3х–4)^2–(2х+1)^2=15
9х^2–24х+16–4х^2–4х–1–15=0
5х^2–28х=0
х(5х–28)=0
х1=0; 5х=28
х2=5 3/5
в) (2х–5)^2=64
2х–5=8; 2х–5=–8
2х=13; 2х=–3
х1=6,5; х2=–1,5
г) 8х–(х+4)^2=3х^2–20
8х–х^2–8х–16–3х^2+20=0
–4х^2=–4
х^2=1
х1=1; х2=–1