Объяснение:
[tex]4-a^2-2ab-b^2=4-(a^2+2ab+b^2)=[/tex]
[tex]2^2-(a+b)^2=(2+(a+b))(2-(a+b))=[/tex]
[tex](2+a+b)(2-a-b)[/tex]
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[tex]x^2-y^2=(x-y)(x+y)[/tex]
[tex](x+y)^2=x^2+2xy+y^2[/tex]
Ответ:
(2-a-b)*(2+a+b)
а²+2аb+b²=(a+b)²
a²-c²=(a-c)(a+c)
4-(a²+2ab+b²)=2²-(a+b)²=(2-a-b)*(2+a+b)
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Verified answer
Объяснение:
[tex]4-a^2-2ab-b^2=4-(a^2+2ab+b^2)=[/tex]
[tex]2^2-(a+b)^2=(2+(a+b))(2-(a+b))=[/tex]
[tex](2+a+b)(2-a-b)[/tex]
---
[tex]x^2-y^2=(x-y)(x+y)[/tex]
[tex](x+y)^2=x^2+2xy+y^2[/tex]
Ответ:
(2-a-b)*(2+a+b)
Объяснение:
а²+2аb+b²=(a+b)²
a²-c²=(a-c)(a+c)
4-(a²+2ab+b²)=2²-(a+b)²=(2-a-b)*(2+a+b)