Question

1) 2а²–1b= 2) (х+3)²= 3) (16+2у)²= 4) 4х²+12х+9= 5) 36-121х²= 6) х²-6х+9= 7)9х²–24х+16= 8) 16²+40х+25= помогите пожалуйста

Answer 1

1) = 2a² - b
2) = $x^{2}$-4x+9
3) = 256+64y+4$y^{2}$
4) = (2x+3)²
5) = (6-11x)(6+11x) 
6) = (x-3)²
7) = (3x - 4)²
8) = (16+5)²