Question

If ( x + 2 ) / ( x – 2 ) = 2 / 3 , then x = _____​

Answer 1

Answer:

C

14,−83

x=2−3⇒x1=2−31=2+3

(x2+x21)=(x+x1)2−2=(2−3+2+3)2−2=14

(x2−x21)=(x−x1)(x+x1)=(4×−23)=−83

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