Question

Дам 25 балов на фото решить

Answer 1

Ответ:

$121-(2y+x)^2=(11-2y-x)(11+2y+x)\\\\(6+x)^2-36=(6+x-6)(6+x+6)=x\, (12+x)\\\\(12-5x)^2-1=(12-5x-1)(12-5x+1)=(11-5x)(13+5x)\\\\8x^2-8y^2=8(x-t)(x+y)\\\\10a^2-40x^2=10*a-2x)(a+2x)\\\\4x(m-n)-m+n=4x(m-n)-(m-n)=(m-n)(4x-1)\\\\x(a-b)+a-b=(a-b)(x+1)\\\\4y(k-p)-k+p=4y(k-p)-(k-p)=(k-p)(4y-1)\\\\3m(x+y)-x-y=3m(x+y)-(x+y)=(x+y)(3m-1)\\\\3m(x+y)-x+y=(3m-1)\, x+(3m+1)y\\\\9a^2-9x^2=9\, (a-x)(a+x)$