exam Maths Puzzle Numerical Ability



Hello I am having trouble with this equation could anyone help me figure it out?x^9-3x^8-28x^7
I would really appreciate it!

Thank you,
Mrs. Gibson

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exam Other Question
5) For the equation x-2sqrt x=0 , perform the following:
a) Solve for all values of x that satisfies the equation.
Answer:
Show work in this space.





b) Graph the HOW MANY DIAGONALS CAN BE DRAWN FROM ONE VERTEX OF A REGULAR OCTAGON?