Asked by martha

Find the value of C that will make 25x^2-40x+c a perfect trinomial.
Answered by MathMate
I suppose what you mean by a perfect trinomial is a perfect square, in which case c has to be a perfect square in such a way that
25x^2-40x+c = (5x-4)^2
Can you find c?
Answered by Anna
The answer is 16 because when you use FIOL for (5x-4)(5x-4) you get 25x^2 -20x-20x+16.Then you simplify to 25x^2-40x+16 to your original problem with the answer of 16 in the problem.

FIOL is multiplying...
the FIRST term
then INNER terms
then OUTER terms
finally your LAST terms.
Answered by Anonymous
16
Answered by anonymous
16
There are no AI answers yet. The ability to request AI answers is coming soon!