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Multiple choice

Which of the following expressions represents the value of $\frac{7x^2y + 2xy^2 + 3}{(x+4)^3}$ at x = 1 and y = 2?

  1. 9

  2. 8

  3. 7

  4. None of these

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

$\frac{7x^2y + 2xy^2 + 3}{(x+4)^3}$ = $\frac{7(1)^2 2 + 2(1)(2)^2 + 3}{(1+4)^3}$= $\frac{14+8+3}{125} = \frac{1}{5}$ 

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