alleryஇயற்கணிதக் கோவையை விரிவுபடுத்திச் சுருக்குக: (x + 3)(x - 3)
Ax^2 - 9
Bx^2 - 6
Cx^2 + 9
Dx^2 - 3
Answer & Solution
Correct answer: A. x^2 - 9
(x + 3)(x - 3) = x^2 - 3^2 = x^2 - 9 (வர்க்கங்களின் வித்தியாசம்).
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