A)(2x-1)^2. b)(5-4x)^2. c)(1/2x+3)^2. d)(√2x+1)^2. e)(5-3√x)^2. f)(5x-7)(7+5x). g)(1-x^2)^2. h)(2+x^2)^2

А) (2х-1)^2=4х^2-4х+1
б) (5-4х)^2=25-40х+16х^2
с) (1/2х+3)^2=1/4х^2+3х+9
d) (√2x+1)^2=2x+2√2x+1
e) (5-3√x)^2=25-30√x+9x
f) (5x-7)(7+5x)=25x^2-49
g) (1-x^2)^2=1-x^2+x^4
h) (2+x^2)=4+4x^2+x^4