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Degger [83]
3 years ago
12

What is 6a squared - 12a+36

Mathematics
2 answers:
anyanavicka [17]3 years ago
5 0
6a² - 12a + 36 = 0
a = <u>-(-12) +/- √((-12)² - 4(6)(36))</u>
                        2(6)
a = <u>12 +/- √(144 - 864)</u>
                    12
a = <u>12 +/- -√720
</u><u /><u /><u />            12
a = <u>12 +/- -√(9 × 16 × 5)</u>
                   12
a = <u>12 +/- -√9 -√16 -√5</u>
                   12
a = <u>12 +/- (-3)(-4) -√5</u>
                 12
a = <u>12 +/- 12-√5</u>
              12
a = <u>12 +/- 12(-2.236067978)</u>
                      12
a = <u>12 +/- (-26.83281573)</u>
                     12
a = <u>12 + (-26.83281573)</u>            a = <u>12 - (26.83281573)</u>
                    12                                              12
a = <u>12 - 26.83281573</u>                a = <u>12 + 26.83281573</u>
                   12                                              12
a = <u>-14.83281573</u>                      a =<u> 38.832815723</u>
               12                                                12
-1.236067978                            a = 3.236067978
<u />
Lera25 [3.4K]3 years ago
3 0
6a²-12a+36= 6a²-12a=-36  
Put the normal number on the other side to have the variables on one side, and the normal number on the other.
Then group:
                = 36a-12a= -36
                = 24a=-36
Then isolate a:
                = a=-36/24
Then simplify:
                =a = - 3/2

Hope this helps!


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