(x-3)^2+(3-x)(x+3)=(x+2)^2-x^2

Question

(x-3)^2+(3-x)(x+3)=(x+2)^2-x^2

Answer 1

(x-3)^2+(3-x)(x+3)=(x+2)^2-x^2
х^2-6x+9+9-x^2=x^2+4x+4-x^2
-6x+18=4x+4
-2x=-14
х=7

Comments

неи

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нет

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1,6