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Question Number 128477 by Fikret last updated on 07/Jan/21

x^2 +6y=9 y^2 +8x=16 x=?

x2+6y=9y2+8x=16x=?

Commented by mr W last updated on 07/Jan/21

y=((9−x^2 )/6) (((9−x^2 )^2 )/(36))+8x=16 x^4 −18x^2 +288x−495=0 (x^2 +6x−15)(x^2 −6x+33)=0 ⇒x=−3±2(√6), 3±2(√6)i

y=9−x26(9−x2)236+8x=16x4−18x2+288x−495=0(x2+6x−15)(x2−6x+33)=0⇒x=−3±26,3±26i

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