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

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

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 10:20pm
I 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)

## Answer this Question

## Related Questions

- algebra 2 - So I am doing my algebra home work and I get stuck on these three ...
- algebra - How do you work these problems? 8x-7=15+19x 7.6x-3.5x=-65.6 -7x-23=-25...
- Math - 2. Anita multiplies a number by 2 and then adds her starting number to ...
- Algebra - Find the product (1 - 3x) (x^2 - 6x - 4)x^2 A. -3x^5 + 19x^4 + 6x^3 - ...
- Algebra - Can you please help me with these Algebra word problems? Complete the ...
- About work - Hello am new at this work at home but i never find any good site i ...
- college algebra - I'm stuck on 2 problems I know the answers but need to learn ...
- Pre-Algebra - I'm stuck on these two problems; can someone show me how to solve ...
- Algebra - Alan and Bob are playing with numbers. Starting with the number n=1 ...
- Algebra - Alan and Bob are playing with numbers. Starting with the number n=1 ...

More Related Questions