SOLUTION: what is the completely factored form of the expression 4x^2 - 49 ?

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Question 970050: what is the completely factored form of the expression 4x^2 - 49 ?
Found 2 solutions by macston, Boreal:
Answer by macston(5194) About Me  (Show Source):
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
This is a difference of squares, since 4, x^2 and 49 are all perfect squares
Take the square root of this and make the second term of the first positive and the second term of the other negative.
(2x+7) (2x-7) ANSWER
Foil it out
4x^2 -14x + 14x -49
4x^2=49.