1. Simplify the following.
(3x2 - 3x + 9) + (x2 - 4x - 6)
4x2 - x + 3
4x2 - 7x + 3
3x2 - 7x + 3
4x2 - 7x + 15
2.Simplify the following.
(5x2 - 4x + 7) - (x2 - 2x - 5)
5x2 - 2x + 12
4x2 - 6x + 12
4x2 - 2x + 2
4x2 - 2x + 12
3.Simplify the following.
(6x2)(-7x)
-42x3
-42x2
-42x
42x3
2007-01-26 13:49:41 · 9 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
1. 4x^2-7x+3
2. 4x^2-2x+12
3. -42x^3
2007-01-26 14:04:57 · answer #1 · answered by ironduke8159 7 · 0⤊ 0⤋
1. Simplify (3x^2 - 3x + 9) + (x^2 - 4x - 6)
First: rewrite the expressions without the parenthesis...
3x^2 - 3x + 9 + x^2 - 4x - 6
Sec: combine "like" terms...
3x^2 + x^2 - 3x - 4x + 9 - 6
4x^2 - 7x + 3
2. Simplify (5x^2 - 4x + 7) - (x^2 - 2x - 5)
First: rewrite the expressions without parenthesis...
5x^2 - 4x + 7 - x^2 - (-2x) - (-5)
5x^2 - 4x + 7 - x^2 + 2x + 5
Sec: combine "like" terms...
5x^2 - x^2 - 4x + 2x + 7 + 5
4x^2 - 2x + 12
3. Simplify (6x^2)(-7x)
First: multiply the coefficients & variables - when multiply variables with the same base ("x") add exponents...
- 42x^3
2007-01-26 14:16:13 · answer #2 · answered by ♪♥Annie♥♪ 6 · 0⤊ 0⤋
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2016-11-01 09:30:39 · answer #3 · answered by deliberato 4 · 0⤊ 0⤋
1. Simplify the following.
(3x² - 3x + 9) + (x² - 4x - 6) = 4x² - 7x + 3
2.Simplify the following.
(5x² - 4x + 7) - (x² - 2x - 5) = 4x² -2x +12
3.Simplify the following.
(6x²)(-7x) = -42x³
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2007-01-26 14:15:52 · answer #4 · answered by aeiou 7 · 0⤊ 1⤋
#1.4x^2 - 7x + 3
# 2. 4x^2 -2x -2
# 3. -42x^3
2007-01-26 14:03:07 · answer #5 · answered by Mrs. H 6 · 0⤊ 0⤋
1- A
2- D
3- B
2007-01-26 14:15:14 · answer #6 · answered by chhrisss 1 · 0⤊ 1⤋
Seems like your whole homework is here. :D
2007-01-26 13:57:55 · answer #7 · answered by Dazeddd 2 · 1⤊ 1⤋
B
D
A
2007-01-26 14:21:08 · answer #8 · answered by JAMES 4 · 0⤊ 0⤋
1)-B
2)-D
3)-A
2007-01-26 16:00:39 · answer #9 · answered by Ivy 1 · 0⤊ 0⤋