This is a Algebra problem ..Thanks for yours honest answers.
Here are some options: A) x2-2xy-7;B)2x2+2xy+7;C)x2+6xy-7;D)x2+6xy+7.
2006-11-06 05:26:33 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
Have you typed this correctly?
Eq 1: 2x² + 4xy - 3
Eq 2: x² - 2xy - 4
Subtraction:
2x² + 4xy - 3 - (x² - 2xy - 4)
= 2x² + 4xy - 3 - x² + 2xy + 4
= (2x² - x²) + (4xy + 2xy) + (-3 + 4)
= x² + 6xy + 1
I don't see that in your list.
If your first equation is 2x² + 4xy *plus* 3, then your answer is:
D) x² + 6xy + 7
2006-11-06 05:28:57 · answer #1 · answered by Puzzling 7 · 0⤊ 0⤋
2x2 + 4xy - 3 - (x2 - 2xy - 4) = 2x² - x² + 4xy + 2xy - 3 + 4 = x² + 6xy + 1
2016-05-22 04:28:00 · answer #2 · answered by ? 4 · 0⤊ 0⤋
x^2+6xy+1
2006-11-06 05:29:16 · answer #3 · answered by raj 7 · 0⤊ 0⤋
2x2+ 4xy -3 -(x2-2xy-4) = 2x2 +4xy -3 -x2 +2xy+4 = x2+6xy+1.
2006-11-06 05:29:59 · answer #4 · answered by diesonne 1 · 0⤊ 0⤋
2x+6xy+1 is the answer
2006-11-06 06:23:44 · answer #5 · answered by Anonymous · 0⤊ 0⤋