Need help quadradic equations

Solve using the quadratic formula

$\displaystyle x^2-7x+12=0$

$\displaystyle 2x^2 - 7x - 4 = 0$

Use the zero product properity to solve for x and k

$\displaystyle 6k^2-k-1=0$

$\displaystyle x^2+6x-7=0$

I hate posting this many problems but the math class i'm in, I can't learn, its an overcrowded classroom with people who are there that don't care to learn and just do whatever, I'm getting my mom to call so I can get switched out of the class and put into one that i'll have the ability to learn more, anyways, thank you for any help that anyone is able to give.

i am doin the same thing i could only get the first one and the last on tough.

Quote:

Originally Posted by

**Haxcake** Solve using the quadratic formula

$\displaystyle x^2-7x+12=0$

$\displaystyle 2x^2 - 7x - 4 = 0$

Use the zero product properity to solve for x and k

$\displaystyle 6k^2-k-1=0$

$\displaystyle x^2+6x-7=0$

I hate posting this many problems but the math class i'm in, I can't learn, its an overcrowded classroom with people who are there that don't care to learn and just do whatever, I'm getting my mom to call so I can get switched out of the class and put into one that i'll have the ability to learn more, anyways, thank you for any help that anyone is able to give.

1. $\displaystyle x^2-7x+12=0$

(x-3)(x-4)

x-3=0 x=4

x-4=0 x=3

4. $\displaystyle x^2+6x-7=0$

(x+7)(x-1)

x+7=0 x=1

x-1=0 x=-7