Ответ:
a) (x+2)+(x - 2) = x+2+x-2=2x
б) (2x - 3y)*(2x +34)=4x^2+68x-6xy-102y
в) (b2 +4)*(4-b2)=4b^2-b^4+16-4b^2=-b^4+16
a) (y+3)*(y-3)=y^2-3y+3y-9=y^2-9
б) (3a-3y)*(2x+3y)=6ax+9ay-6xy-9y^2
в) (b2+4)*(4-b2)=4b^2-b^4+16-4b^2=-b^4+16
Объяснение:
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Answers & Comments
Ответ:
a) (x+2)+(x - 2) = x+2+x-2=2x
б) (2x - 3y)*(2x +34)=4x^2+68x-6xy-102y
в) (b2 +4)*(4-b2)=4b^2-b^4+16-4b^2=-b^4+16
a) (y+3)*(y-3)=y^2-3y+3y-9=y^2-9
б) (3a-3y)*(2x+3y)=6ax+9ay-6xy-9y^2
в) (b2+4)*(4-b2)=4b^2-b^4+16-4b^2=-b^4+16
Объяснение: