Răspunsuri

  • Utilizator Brainly
2014-02-18T22:00:40+02:00
(x+3)²=x²+6x+9
(x+1)²=x²+2x+1
(2x+1)²=4x²+4x+1
se aplica (a+b)²=a²+2ab+b²
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2014-02-18T22:02:58+02:00
(x+3)^2 = X^2 + 6x+9
(x+1)^2=X^2+2x+1
(2x+1)^2=4x^2+4x+1 . 

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