Subtract and simplify: (y2 – 7y – 5) – (–3y2 + 3y – 4) A. 4y2 + 4y – 9 B. 2y2 – 10y + 4 C. 4y2 – 10y – 1 D. 2y2 – 7y – 9
(y2 – 7y – 5) – (–3y2 + 3y – 4) = y2 + 3y2 -7y -3y -5 + 4 = 4y2 – 10y – 1
g
Question
Updated 4/4/2014 2:08:33 PM
Rating
3
(y2 – 7y – 5) – (–3y2 + 3y – 4)

= y2 + 3y2 -7y -3y -5 + 4

= 4y2 – 10y – 1

Questions asked by the same visitor
A triangle has sides of the following lengths: 3x + 1, 6x + 2, 8x - 2. What is the perimeter? a.10x + 1 b.17x - 1 c. 17x + 1 d. 5x + 1
Question
Updated 4/8/2014 11:06:08 PM
P = a + b + c = (3x + 1) + (6x + 2) + (8x - 2) = 17x + 1
Confirmed by jeifunk [4/8/2014 11:07:22 PM]
Add: (7x – 6y + 4z – 1) + (–3x + 3y – 5z + 3) A. 4x – 3y + z + 2 B. 4x – 3y – z + 2 C. –4x + 3y –z – 2 D. –4x + 3y – z + 2
Question
Updated 7/8/2014 8:56:59 AM
(7x – 6y + 4z – 1) + (–3x + 3y – 5z + 3)
= 7x – 6y + 4z – 1 – 3x + 3y – 5z + 3
= (7x - 3x) + (-6y + 3y) + (4z - 5z) + (-1 + 3)
= 4x - 3y - z + 2
Confirmed by jeifunk [7/8/2014 9:05:04 AM]
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