Posted by **Lynne** on Monday, November 1, 2010 at 9:36pm.

Have 2 questions:

1. Factor Trinomial competely

x^2 + 8x + 53 (reads as x squared plus 8x plus 53) I am thinking it is prime.

2. Solve

4x^2 + 23x - 30=0

(reads 4x squared plus 23x minus 30 equals zero

- math -
**Reiny**, Monday, November 1, 2010 at 9:58pm
Factoring a quadratic and solving the corresponding quadratic equation are closely related.

in the first case I would consider solving it as

x^2 + 8x + 53 = 0

since the only factors of 53 are 1 and 53 itself, there is no way we can get that 8 in the middle.

using the formula we get imaginary roots, so the thing does not factor.

2.

4x^2 + 23x - 30 = 0

just use the quadratic formula,

I got x = (-23 ± √1009)/8

- math -
**lynne**, Monday, November 1, 2010 at 10:07pm
we haven't used the quadratic formula yet. for #2 i m trying to find the factors of 30 that add to 23. not finding any..any idea

- math -
**lynne**, Monday, November 1, 2010 at 10:09pm
the second question reads as 40x squared plus 23x minus 30=0

## Answer This Question

## Related Questions

- math - question is 40x^2 + 23x -30 = 0 reads as 40x squared plus 23x minus 30 ...
- Algebra - Hi! My name is Jason... today I have 2 problems for you both having to...
- Calc Help - Find the derivative. Express answer in radical notation with no ...
- math - I wold like to know if I have this answer right? Factor the trinomial ...
- Math - My worksheet title reads "Modeling 3-Digit Addition Practice" and then it...
- Math 222 - Please someone help me simplify this problem. My addition/plus key is...
- Algebra - I need help solving the trinomial (x squared minus four x plus ...
- physics - Water is in the big beaker in the figure on the left. Scale 1 reads ...
- algebra 2 - What is the factorization of the trinomial 3x2 plus 27x plus 60?
- math - Simplify completely quantity 6 x squared minus 54 plus 84 over quantity 8...

More Related Questions