1) (4х+1)(16х^2–4х+1)–16х(4х^2–5)=17
64х^3–1–64х^3+80х=17
80х=18
х=9/40
4–х^2 х–х^2 (х–1)^2 7х^2
2) --------- – --------- = ---------- – -------
3 4 9 36
16–4х^2–3х+3х^2 4(х–1)^2–7х^2
------------------------- = ---------------------
12 36
–х^2–3х+16 4х^2–8х+4–7х^2
----------------- = -------------------------
12 36
–х^2–3х+16 –3х^2–8х+4
----------------- = ------------------ | •(–36)
12 36
3х^2+9х–48 = 3х^2+8х–4
х = 44