Question

Solve: x^2 - 7x = -12

Answer 1

use middle term factor process

Answer 2

Got it! =5 and 4

Answer 3

no, 3 and 4
check it out again

Answer 4

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

Answer 5

apply the concept correctly

Answer 6

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:

\(\Large \color{MidnightBlue}{\Rightarrow x = {-b \pm \sqrt{b^2 - 4ab} \over 2a} }\)

Answer 7

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

Answer 8

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

Answer 9

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

Answer 10

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

Answer 11

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

Answer 12

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

Answer 13

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

Answer 14

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

Answer 15

There's always the quadratic formula :D

Answer 16

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

Answer 17

You can look at wolframalpha to check it.

Answer 18

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