exam Maths Puzzle Numerical Ability

Anybody know how to solve this one

Given f(x)=-5x^4+x^3+2x^2+3x+1, and k=1, express f(x) in the form f(x)=(x-k)q(x)+r


thank you very much for your time

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exam Other Question

how do you solve this system of equations

x squared + y squared = 9
5x-y=-3
for each pair of equations, determine if the lines are parallel, perpendicular, or neither.

y-3x=10 and 3y+x = -5

I have no idea how to start. Thank you.