А)х=3 х=-5
б)х=0 х=1/3 х=-1/2
Может так:
(2+t)² (2-t)² = (4+4t +t²)(4-4t+t²) =
=16-16t+4t²+16t-16t²+4t³ +4t²-4t³+t⁴=
= 16+ (-16t+16t) +(4t²-16t²+4t²) +(4t³-4t³) +t⁴=
=16-8t² +t⁴= (t²)² -2*4*t²+4²= (t²-4)²
Y=kx+q
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Tolko A) y=x-2, k=1, q=-2
1. 1.5х^2у^2
(х^2+2х)/2
(3(а-2))/а+3
4+2*1=6
6+2*2=10
10+2*2*2=18
18+2*2*2*2=34
34+2*2*2*2*2=66
Ответ:66