homework help: Sorry, but I would like some Algebra help, please..? - Help.com

Crow-chaser
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Sorry, but I would like some Algebra help, please..?

I suck at math, and I’m highly unsure as to the correct way to do these problems. It tells me to solve the systems Algebraically and gives me a pair of equations such as Y= 7x. X^2+y=0. Okay, I -think- that I need to find the zeroes or x-intercepts, which are the solutions. As far as my incompetent brain goes, I can only think to substitute the Y{7x} into the quadratic equation. Wait..I’m not highly unsure. I just don’t know..I don’t even know what I’m supposed to do…So I would like a little insight on this to set me on the right track of doing these problems. Thank you for reading! I’d really appreciate help if you can.

This open post was written 8 months, 2 weeks ago | V/U/S: 281, 7, 4 | Edit Post | Leave a reply | Report Post


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Since writing this post Crow-chaser may have helped people, but has not within the last 4 days. Crow-chaser is a verified member, has been around for 1 year, 5 months and has 7 posts and 36 replies to their name.

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math, algebra, homework, Quadratic (How Tags Affect Reciprocity)

Replies (7)

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andretti offline Unverified User #
An Unknown Location | 8 months, 2 weeks ago (16 hours, 38 minutes after post)

x^2+y=0
x^2+7x=0
-2 -2
x+7x=-2
8x=-2
/8 /8
x=-4

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karlito offline Verified User (8 months, 2 weeks) Long Term User Shouts: 0 #
An Unknown Location | 8 months, 2 weeks ago (1 day after post)

The above reply is wrong. you can’t just subtract x-squared minus 2 to get x. You had the concept right in your post. you just need to do it.
Here:

x^2+7x=0
x(x+7)=0
if x=0
then 0(0+7)=0
if x=-7
then -7(-7+7)=0
x=0,-7

There are two solutions to a quadratic equation

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Crow-chaser offline Verified User (1 year, 5 months) Long Term User Shouts: 1 #
An Unknown Location | 8 months, 2 weeks ago (1 day after post)

Thank you!

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karlito offline Verified User (8 months, 2 weeks) Long Term User Shouts: 0 #
An Unknown Location | 8 months, 2 weeks ago (1 day, 1 hour after post)

You’re welcome any time :)

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dbjand offline Unverified User #
An Unknown Location | 8 months, 1 week ago (3 days, 14 hours after post)

What the heck, is this 8th grade math?

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Crow-chaser offline Verified User (1 year, 5 months) Long Term User Shouts: 1 #
An Unknown Location | 8 months, 1 week ago (3 days, 22 hours after post)

Yes, I would suppose it is, dbjand. Because I’m in 8th grade…I take 9th grade Algebra though..?

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mricks offline Verified User (4 months, 2 weeks) Long Term User Shouts: 0 #
An Unknown Location | 4 months, 2 weeks ago (3 months, 3 weeks after post)

im in seventh and take 9th grade algebra

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Help me with: polynomials and monomials

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