SOLUTION: Complete the trinomial so it is a perfect square. 16x^2 + ___+ 25

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Question 640486: Complete the trinomial so it is a perfect square. 16x^2 + ___+ 25
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
Take the square root of 16 to get 4. Take the square root of 25 to get 5.

Now multiply 4 and 5 to get 20. Double this to get 40.

So 40x is the missing term, which means that

16x^2 + _40x_+ 25

is a perfect square trinomial.