Question

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Прикрепил !!!

Answer 1

(х-6)(х+6)
(1-а)(1+а)
(4-х)(4+х)
(9-у)(9+у)
(1/3-b)(1/3+b)
(y-5/6)(y+5/6)
(0,9-x)(0,9+x)
(4a-1)(4a+1)
(10-3y)(10+3y)
(6a-5b)(6a+5b)

Answer 2

Ответ:

Формула разности квадратов:     $a^2-b^2=(a-b)(a+b)$  .

$x^2-36=x^2-6^2=(x-6)(x+6)\\\\1-a^2=1^2-a^2=(1-a)(1+a)\\\\16-x^2=4^2-x^2=(4-x)(4+x)\\\\-y^2+81=9^2-y^2=(9-y)(9+y)\\\\\dfrac{1}{9}-b^2=\Big(\dfrac{1}{3}-b\Big)\Big(\dfrac{1}{3}+b\Big)\\\\y^2-\dfrac{25}{36}=\Big(y-\dfrac{5}{6}\Big)\Big(y+\dfrac{5}{6}\Big)\\\\081-x^2=(0,9-x)(0,9+x)\\\\16a^2-1=(4a-1)(4a+1)\\\\100-9y^2=(10-3y)(10+3y)\\\\36a^2-25b^2=(6a-5b)(6a+5b)$