exam Maths Puzzle Numerical Ability

Which describes the number and type of roots of the equation x(squared)-625=0?

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exam Other Question

I know that this problem may be an easy one, but I am not sure if I am correct.

5x-3/6 - x+5/6

I have come up with 5/6. Am I correct with this answer??? can you help me solve this problem

Use long division to find the quotient Q(x) and the remainder R(x) when P(x) is divided by d(X).

P(x)= x^4+2x^3-2x+4
d(x)=x-2