exam Maths Puzzle Numerical Ability

Please help us find the Factor and show any formula that you used.

5cx2 + 10c2x - 15c3

Thank you for any help that you can give.

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exam Other Question

all parallel lines have the same slope, and not all systems of equations have a common solution. Is this True or False? i need help finding the length of the third side of the triangle or if it can make a triangle