Question

Prove that If r is any rational number, then 3r^2+2r+4 is rational

Answer 1

Step-by-step explanation:

given that r is rational .

and we know that rational × rational = rational and,

rational + rational = rational

so 3r^2 + 2r + 4 = rational

r is rational, multiplied by 3(rational) add r multiplied by 2(rational) add 4(rational) equals rational

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