Practice problem
What would you multiply by to simplify the expression 3x3+5x \dfrac{3x}{3+\sqrt5x}\;3+5x3x?
3+5x3+5x\dfrac{3+\sqrt5x}{3+\sqrt5x}3+5x3+5x
13+5x\dfrac{1}{3+\sqrt5x}3+5x1
13−5x\dfrac{1}{3-\sqrt5x}3−5x1
3−5x3−5x\dfrac{3-\sqrt5x}{3-\sqrt5x}3−5x3−5x
Type a concept, like “slope” or “photosynthesis”.