Friday

August 29, 2014

August 29, 2014

Posted by **Alyssa** on Sunday, November 10, 2013 at 9:05pm.

x^2-19x+72 from there idk what to do because nothing multiplies up to 72 and adds up to -19.

Same for this one.

x^2-25x+48

And

x^2+9-90

(X+15) (x-6)

- algebra 2 -
**Reiny**, Sunday, November 10, 2013 at 10:20pmI am assuming you are factoring ?

for x^2 - 19x + 72 there are no factors with rational numbers

(I found the discriminant b^2 - 4ac to be 649, which is not a perfect square, thus no factors)

x^2 - 25x - 90

same thing, b^2-4ac = 985 , no factors

I assume a typo in the 3rd and you meant:

x^2 + 9x - 90

which does factor to (x+15)(x-6)

**Related Questions**

Algebra - You commute 56 miles one way to work. The trip to work takes 10 ...

Algebra - You commute 56 miles one way to work. The trip to work takes 10 ...

algebra 1 - Jaun drives to work. he averages 22mph, he returnes home averaging ...

algebra 2 - pleas help me with my home work 00703600

algebra 2 - So I am doing my algebra home work and I get stuck on these three ...

algebra - Explain how many miles does it takes to get from home to work, with "...

Algebra - You commute 56 miles one way to work. The trip to work takes 10 ...

About work - Hello am new at this work at home but i never find any good site i ...

English - Native speakers - Hello! I am trying to figure out one of the most ...

algebra 1 - 3/4 + 1/8 = then simplifly i really dont get this and i need ...