Solve: x^2 - 7x = -12

Question

anonymous · Answer

use middle term factor process

anonymous · Answer

Got it! =5 and 4

anonymous · Answer

no, 3 and 4
check it out again

pfenn1 · Answer

$$x^2-7x+12=0$$Can either factor or might be just as easy to use the quadratic equation.$$ax^2+bx+c=0$$$$x=\frac{-b \pm \sqrt{b^2-4ac}}{2a}$$

anonymous · Answer

apply the concept correctly

parthkohli · Answer

Add 12 to both sides.

$\Large \color{MidnightBlue}{\Rightarrow x^2 - 7x + 12 }$

A quadratic equation is ax^2 + bx + c = 0
According to that, the formula is:

$\Large \color{MidnightBlue}{\Rightarrow x = {-b \pm \sqrt{b^2 - 4ab} \over 2a} }$

anonymous · Answer

Here's a nother problem i'm not sure on... Quadratic equations can be solved using the quadratic formula... Always, sometimes, or never.. I think its sometimes

anonymous · Answer

x= 3 and 4... http://www.wolframalpha.com/input/?i=x%5E2+-+7x+%3D+-12

parthkohli · Answer

Always...they can be....unless there's no solution

anonymous · Answer

always there is solution.. no unless is there
thing is that the roots may be real or imaginary depending on the equation

parthkohli · Answer

No solution here means no real solution. There may be a complex one.

anonymous · Answer

but if a particular set is specified, then the answer will be 'sometimes'

anonymous · Answer

What about this one... What are the solutions of x^2 + 2x + 9

anonymous · Answer

i got the answer x = -2 + or - √32 all over 2

parthkohli · Answer

There's always the quadratic formula :D

anonymous · Answer

use the quadratic formula again...... simple

parthkohli · Answer

You can look at wolframalpha to check it.

anonymous · Answer

i got the answer x = -2 + or - √32 all over 2