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An astronaut set out in a spaceship from Earth orbit to travel to a distant star in our galaxy. The spaceship travelled at a speed of 0.8 c. When the spaceship reached the star, the on-board clock showed the astronaut that the journey took 20 years. An identical clock remained on Earth. What...

thanks mate (:

Not really sure on how to go about doing this : / Solve the equation 6x4-11x3-26x2+22x+24=0 given that the product of two of the roots is equal to the product of the other two.

OMG thanks so much you're the bomb! This question was going to drive me nuts. Very much appreciated.

Find functions which are the inverse of each of the following. State the domain and range of the inverse in each case. 22. f(x)=x^2 + 2x, x≥0

Really need help with this question! Been at it for a few days and not quite sure how to do it. http://mathurl.com/l4jo8p7.png