Homework Help: Math

Posted by Emily on Monday, March 3, 2008 at 6:15pm.

I have this worksheet, it has a bunch of different kinds of questions, but i know all the stuff we learned, i just dont know which ones i use. 1) factor each expression, 8x+10 2) Use Foil to factor each expression, x2-5x+6 3) Use foil to factor each expression, n2+n-20.

Math - Damon, Monday, March 3, 2008 at 6:36pm
8 x + 10
all you can do here is factor out 2
= 2 (4x+5)

x^2 - 5 x + 6
is quadratic and of form a x^2 + b x + c
we know it will have factors of form ( p x + q)(r x + s) which we can foil to get the original back (We do not know however if all those constants are integers, but we can hope
Now 6 is either 6*1 or it is 2 * 3
we know p and r are one to get 1 x^2
we know both q and s must be - to get a positive outer product and negative inner product so
so try to FOIL
(x-2)(x-3) (by the way it works)

n^2 + n - 20
well, 20 = 2 * 10 or 20*1 or 4*5
I know I need
(n - something ) (n + something that is one bigger and gives an outer product of 20
so try to FOIL
(n-4)(n+5)

Answer this Question

Related Questions

chemistry - Write the reaction equation for Isopropylbenzene producing Benzene P...
Math - I need help on the worksheet of what do you get if a bunch of bad guys ...
Math - I need help on the worksheet of what do you get if a bunch of bad guys ...
Math - A restaurant owner has a luncheon special that consists of a cup of soup...
Socials - We are doing this party thing in Socials class. And my party is the ...
Math - I'm haveing trouble with this problem, I've tryed all of the ...
Life - Okay, so this isn't homework help or anything but can someone help me...
hinduism - I have to answer these questions in a few sentences, but I can't ...
Math HELP!!!!!! - A pancake shop serves 3 kinds of pancakes,5 kinds of syrup,and...
Art Work Defining - I making a booklet of elements and principles of design and ...

For Further Reading

First Name:
School Subject:
Answer: