SOLUTION: Write the missing value in each perfect trinomial. ?t^2+12t+9 4w^2-?w+81

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Question 76392: Write the missing value in each perfect trinomial.
?t^2+12t+9
4w^2-?w+81
Answer by chitra(359) About Me  (Show Source):
You can put this solution on YOUR website!
The given expression is:

1) ?t^2+12t+9

Solution:

We see the that the given expression forms a quadratic equation.

%282t%29%5E2+%2B+2%282t%29%283%29+%2B+%283%29%5E2

+4t%5E2+%2B+12t+%2B+9

Hence, the missing term is 4

2) 4w^2-?w+81

Solution:

The given expression can be written as:

+%282w%29%5E2+-+2%282w%29%289%29+%2B+%289%29%5E2+

+4w%5E2+-+36w+%2B+81+

Hence, the missing term is 36