subtract using vertical method.
7x^2+6x from 9x^2-3
add using vertical method.
5x^2+2x-4, x^2-2x-3, and 2x^2-4x-3
2007-11-16 05:32:43 · 6 answers · asked by God Bless America!~ 4 in Science & Mathematics ➔ Mathematics
Line your equations up so like terms are in the same column:
PROBLEM 1:
9x² ........ - 3
7x² + 6x ............ (subtract)
-----------------
2x² - 6x - 3 <--- ANSWER
Notes:
9x² - 7x² = (9-7)x² = 2x²
0x - 6x = (0 - 6)x = -6x
-3 - 0 = -3
PROBLEM 2:
5x² + 2x - 4
..x² - 2x - 3
2x² - 4x - 3 ............ (add)
-----------------
8x² - 4x - 10 <--- ANSWER
Notes:
5x²+x²+2x² = (5+1+2)x² = 8x²
2x + (-2x) + (-4x) = (2 + -2 + -4)x = (-4)x
-4 + -3 + -3 = -10
2007-11-16 05:42:13 · answer #1 · answered by Puzzling 7 · 1⤊ 0⤋
subtract using vertical method.
7x^2+6x from 9x^2-3
solution:
all you need to do is combined the like terms in vertical form and simplify it.
...9x^2........... -3
(-)7x^2.....+6x
-------------------
2x^2 - 6x - 3
add using vertical method.
5x^2+2x-4, x^2-2x-3, and 2x^2-4x-3
solution:
5x^2.....+2x....-4
x^2.......-2x.....-3
2x^2.....-4x.....-3
-------------------------
8x^2 - 4x -10
hope it helps.
2007-11-16 05:49:03 · answer #2 · answered by Anonymous · 0⤊ 0⤋
9x^2 -3
-7x^2 -(+6x)
----------------
2x^ -6x -3
. 5x^2+2x -4
+1x^2 -2x -3
+2x^2 -4x- 3
------------------
8x^2 -4x -10 = 2(4x^2 -2x -5)
2007-11-16 05:43:57 · answer #3 · answered by David F 5 · 0⤊ 0⤋
1. 2X^2 - 6X - 3
2. 8X^2 - 4X - 10
2007-11-16 05:41:00 · answer #4 · answered by Anonymous · 0⤊ 0⤋
the 1st one should be 2x^+6x-3
the 2nd one should be 8x^6-4x-10
2007-11-16 05:41:58 · answer #5 · answered by Sammy boy 1 · 0⤊ 1⤋
2x^ -6x -3
8x^2 -4x -10
2007-11-16 05:36:55 · answer #6 · answered by ironduke8159 7 · 0⤊ 0⤋