Question

Помогите 3 столбик весь 

Answer 1

$1) (a+12)^{2}=a^{2}+24a-144$

$2)a^{2}+12a+36=(a+6)^{2}$

$3)(8b+5a)(5a-8b)=64b^{2}-25a^{2}$

$4)a^{2}-25=(a-5)(a+5)$

$6)(15-x)^{2}=225-30x+x^{2}$

$8) (p-7)(p+7)=p^{2}-49$

$9)144b^{2}-c^{2}=(12b-c)(12b+c)$

$10)(-x-y)^{2}=x^{2}+2xy+y^{2}$

$12) (m+n)^{2}=m^{2}+2mn+n^{2}$

$13) b^{2}+9a^{2}-6ab=(b-3a)^{2}$$14) (7+3y)(3y-7)=9y^{2}-49$

$16) (m-0,3)^{2}=m^{2}-0,6m+0,09$

$17) 64-16a+a^{2}= (a-8)^{2}$

$18) (8b+5a)(8b-5a)=64b^{2}-25a^{2}$

$20) (0,2-x)^{2}=0,04-0,4x+x^{2}$

$22) (4+k)(k-4)= k^{2}-16$

$24) (-c-10)^{2}=c^{2}+20c+100$

$25) (1+a)^{3}= 1+6a+a^{3}$

$26) (c-2)^{3}=c^{3}-6c+6c-8=c^{3}-8$