We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive pseudonymised information about your use of our website.
Please click on "Accept cookies" if you agree to the setting of cookies. Cookies that do not require consent remain unaffected by this, see
cookie policy and privacy policy.
DECLINE COOKIES

Is there any way to get this answer without actually looking at the given answers?

LaughingFace May 7, 2018

#1**+1 **

2x^2 + 15x + 25

Here's a method that often works for problems like these...it's a little guesswork....but sometimes it pays off

I'm guessing that we can write 15x in this manner...... 10x + 5x

2x^2 + 10x + 5x + 25

I see that the first constant multiplied by 5 will give me the second constant.....and the third constant multiplied by 5 will give me the last constant...so......let's factor. the first two terms and the last two terms.... [factoring by "grouping " ]

2x ( x + 5 ) + 5 ( x + 5)..... note that ( x + 5) is common

So......the factorization is

( x + 5 ) ( 2x + 5)

CPhill May 7, 2018