Sunday

April 20, 2014

April 20, 2014

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

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 9:58pmFactoring 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 10:07pmwe 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 10:09pmthe second question reads as 40x squared plus 23x minus 30=0

**Related Questions**

math - what is the gcf of 8x squared y, 12x to the fourth y to the fourth, and ...

Algebra II - Factor out: 64x^3 + 1 It is a binomial times a trinomial (4x+1)(16x...

Algebra - Hi! My name is Jason... today I have 2 problems for you both having to...

Algebra - Which equation could be used to find the dimensions of a room that has...

math, beginning algebra - how do you solve this i've tried many ways and i ...

algebra - (5x to the 2nd power minus 4x plus 29) plus (3x to the 2nd power plus ...

math - I need help with these two problems please. Completely factor the ...

Please check Algebra - Please take a look at my work and let me know if I made ...

algebra - Graphthe equation y plus 6 equals 1/8(x-2 1/8x - 2/8 add 2/8 to 6, so ...

alegbra - factoring completely, state that the polynomials is prime. x^-16 (x+8...