3x - 4y = 9 and 2x + 3y = 7, which of the following would be the best method?
Its simplest form is 8 5/18
We can cosider this to be a difference of 2 squares so
4x^4 - 9x^2 = (2x^2 - 3x)(2x^2 + 3x) so D is one answer
also we could take x^2 out and get
x^2(4x^2 - 9) = C
Answer:
I believe the answer to this question is: 1 x 10^21 equal to 1000000000000000000000.