exam Maths Puzzle Numerical Ability

I need help on page #575 on question #20. I need to solve the roots of each quadratic equation using the factoring method, and place the equation in standard form before factoring:


X^2=10x-24


Thanks for your time. =)

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exam Other Question
Is there a formula for answering this problem?
The coordinates are (-1,2),(-10,-1). Find two points that can cut the segment into three parts with equal length. The graph of the equation below is an ellipse. What is the y-coordinate of the center of that ellipse?

(x+3)^2/5^2+(y+9)^2/8^2=1

i had gotten 9 but it was wrong