exam Maths Puzzle Numerical Ability

faxtor: 12w2+10w-8
factor 4k2+20k+25
factor: 16e2-4
factor: 3a2+9a+6

thank you for your help

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exam Other Question

Hello, could someone help me on these problems please? Thank you for your help.

Find the zeros of the function algebraically.
problem #21: f(x)=4x^3-24x^2-x+6
problem #22: f(x)=9x^4-25x^2
(2x+6y)/(x+y) - (x+2y)/(x+y)

The possible choices are:
4
(x+8y)/(x+y)
(x+4y)/(x+y)
(3x+8y)/(x+y)