book Maths Puzzle Numerical Ability

Find a polynomial equation of lowest degree with integer coefficients and has 0, 3, and plus/minus sq rt of 2 as zeros. Please, anyone help.

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book Other Question

How do you do y= 2x + 3 using substitution?
y= 3x + 1 Hi
I have this hw due tomorrow. I really need the solution to this problem ASAP.
Thanks

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