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Answers by Nick W.

First you need to multiply both sides by (2-x). Then you need to distribute the √(6.4). Add x√(6.4) to both sides, then pull out the x. Dividing both sides by (1+√(6.4)) will give you your final answer. x=2√(6.4)/(1+√(6.4))

y=-x^2+4x+3 (answer)

To answer this question you should use the quadratic formula. -b±√(b^2-4ac)          2 ax^2+bx+c So a=-1 b=4 and c=3 Fill in the quadratic formula: -4±√((-4)^2-4(-1)(3))           ...