Wednesday
April 23, 2014

Homework Help: Troy

Posted by Alegebra2 on Friday, April 11, 2008 at 4:15pm.

Can someone check my answers for the following problems.

Simplify. Assume that no denominator equals 0.
1)(7x^2+3x-9)-(-x^2+8x-3)
answer: 6x^2-5x-6

2) 5x^3(7x)^2
answer: 245x^5

3) (2x-3)^2
answer: 4x^2-9

4) Use synthetic division to find (2x^3-5x^2+7x-1)/(x-1)
answer: 3

5)Identify the vertex,axis of symmetry, and direction of opening for y=2(x+3)^2-5
answer:
Axis of symmetry is x= -3/4
vertex -3/4
opens up

6) write y=-4x^2+8x-1 in vertex form
answer: (-4x+4)^2-17

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