# I need you to focus!

Geometry Level 3

If the foci of the ellipse $$\large \frac{x^2}{25}+\frac{y^2}{9}=1$$ are $$(4,0)$$ and $$(-4,0)$$, then for real number $$\lambda$$, the foci of the ellipse $$\large \frac{x^2}{25+ \lambda^2}+\frac{y^2}{9+\lambda^2}=1$$ are:

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