2007-09-20 16:10:25 · 8 answers · asked by texan3715 1 in Science & Mathematics ➔ Mathematics
just add the similar numbers
5y2+3y2=8y2
-3y+-5y=-8y
7+-7=0
8y2-8y+0
2007-09-20 16:16:15 · answer #1 · answered by princess 3 · 0⤊ 0⤋
p.c.. one equation and resolve for x or y. Ex: I chosen x in equation -x+3y=-7 because of the fact it looks much less stressful to unravel. i'm getting: x = -( -3y - 7). which finally leads to x = 3y + 7 Then insert this equation into the 2d equation. Ex: 2(3y + 7) + 5y = 3 Then resolve for y. 6y + 14 + 5y = 3 11y + 14 = 3 11y = -11 y = -a million ultimately, locate x employing the y you discovered. I used the previous equation I made. x = 3y + 7 x = 3(-a million) + 7 x = -3 + 7 x = 4 for this reason, your answer would desire to be y = -a million and x = 4
2016-10-09 13:58:51 · answer #2 · answered by ? 4 · 0⤊ 0⤋
You can only combine terms with the same power on the variable.
So, you really have 3 mini-problems:
5 y^2 + 3y^2 = 8 y^2
-3 y - 5 y = -8 y
7 - 7 = 0
final answer:
8y^2 - 8 y
I would do some factoring, personally:
8y(y-1)
2007-09-20 16:16:47 · answer #3 · answered by lhvinny 7 · 0⤊ 0⤋
5 y ² - 3 y + 7
3 y ² - 5 y - 7
8 y ² - 8 y
2007-09-24 07:21:07 · answer #4 · answered by Como 7 · 0⤊ 0⤋
5y^2 + 3y^2= 8y^4
-3y + -5y = 8y
7 + -7 = 0
8y^4 - 8y
try and do your own hw next time
2007-09-20 16:17:37 · answer #5 · answered by Wovelscotch 2 · 0⤊ 0⤋
(5y^2-3y+7)+(3y^2-5y-7)
5y^2-3y+7+3y^2-5y-7
5y^2 + 3y^2-3y-5y+7-7
8y^2 -8y
2007-09-20 16:18:25 · answer #6 · answered by Detective Mask 3 · 0⤊ 0⤋
8y2-8y
2007-09-20 16:16:43 · answer #7 · answered by GURU 3 · 0⤊ 0⤋
what does y equal
2007-09-20 16:16:46 · answer #8 · answered by Monkeys 2 · 0⤊ 0⤋