Question

&23 номер 3,4 (в квадратике написано 4 и 4)

900687968cf9fd1afd55897ce2a2a0c4.docx

Answer 1

3
$1)(x^2+4)^2-16x^2=(x^2+4-4x)(x^2+4+4x)=(x-2)^2*(x+2)^2$
$2)(a^2+9)^2-36a^2=(a^2+9-6a)(a^2+9+6a)=(a-3)^2*(a+3)^2$
$3)(a^2+c^4)^2-4a^2c^4=(a^2+c^4-2ac^2)(a^2+c^4+2ac^2)=(a-c^2)^2*$$(a+c^2)^2$
$4)(4m^4+n^2)^2-16m^4c^2=(4m^4+n^2-4m^2c)(4m^4+n^2+4m^2c)=$$(2m^2-n)^2*(2m^2+n)^2$
4
$1)(a+b)^2-1=(a+b-1)(a+b+1)$
$2)(x-y)^2-4=(x-y-2)(x-y+2)$
$3)(2m-5n)^2-36=(2m-5n-6)(2m-5n+6)$
$4)(4a+3b)^2-25=(4a+3b-5)(4a+3b+5)$

Answer 2

1)(x^2-4)^2;2)(a^2-9)^2;3)(a^2-c^4)^2;4)(4m^4-n^2)^2