Not sure what's going on with those "" marks, but
2x^2 - 13x + 21 = (2x-7)(x-3)
2x^2 + 9x - 56 = (2x-7)(x+8)
so, what do you think?
Or,
2x^2 - 13x + 21 = 2x^2 + 9x - 56
22x - 77 = 0
x = 7/2
What solution do 2x^2 "-13x" + 21 = 0 and 2x^2 9x - 56 = 0 have in common? Round your answer to the nearest tenth if necessary.
1 answer