# College Algebra

posted by .

Can someone check my answer please! I'm not sure this is right

x(squared)+7x+10=0
(x+r)(x+s)
=x(squared)+sx+rx+rs
=x(squared)+(r+s)x+rs
x(squared)+(r+s)x+rs=x(squared)+7x+10
r+s=7
rs=10
(2)(5)=10 and 3+4=7
x(squared)+7x+10=(x+5)(x+2)

• College Algebra -

yes, you are right,

For these kind of problems why don't you just expand your answer using FOIL to check if you are right?

## Similar Questions

1. ### Algebra

i need to use the quadratic formula 2 solve these 4 questions: 1. x(squared)-6x+4=0 2. t(squared)+4t-2=0 3. 3x(squared)+10X+5=0 4. 2x=7-x(squared) I just can't seem 2 get the right answer!
2. ### math

How do i find the area of a triangle? For example: A squared + b squared= c squared 8.5 squared + 6.4 squared= c squared 72.25 + 40.96= c squared 113.21=c squared 10.6400188=c even tho i thought this was the answer it is not because
3. ### algerbra

i have to simply the expression 3x squared-10+4x+8-x squared, so far i have this 1x squared+4x-2 3x squared-1xsqaured+4x -10+8 2x squared+4x-2 i know its kinda confusing becasue i type sqaured so many time, am i on the right track?
4. ### math

i am having a minor difficulty i've been stuck for over an hour and don't know what to do i don't know is this right ?
5. ### Math11U

A Pythagorean Triple is a set of integers that satisfy the Pythagorean Theorem, c squared= a squared + b squared. 3,4,5 and 5,12,13 are just two of many examples. Find another, that is not a multiple of the one of the two given, using …
6. ### algebra 2 multiple choice HELP

find f(a), if f(t) = 2t2(squared)-t-2 A. 2(a+t)2(squared)-2t+1-2 B. 2(t+a)2(squared)-2(t+a)-2 C. 2a2(squared)-a-2 D. 4a2(squared)-2a-2 I put (squared) because the two in front of it means it's being squared... please help. thanks!