book Maths Puzzle Numerical Ability

Hi all,
One more question and I should be about done with algebra for awhile. The directions here say to solve for the roots.
p^2+15p+25=6p+5
I have no clue how to do this.
Thanks for the help

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book Other Question

A skier rides a ski lift up a hill at 6km/hr. She skis back down parallel to the ski lift at 34km/hr. Round trip takes 30 minutes. How long far did she ski and for how long? I definately need help with this problem...thanks so very much

Apply the quadratic formula to find the roots of the given function, and then graph the function.

f(x) = x^2 - 4