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# Help. ​

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Help.

NotSoSmart  Nov 3, 2017

#1
+6335
+1

2x2 - 16x + 32  =  0

First divide through by  2 .

x2 - 8x + 16  =  0

Now we can factor the left side. What two numbers add to  -8  and multiply to  16  ?

-4 and -4  , so it factors like this..

(x - 4)(x - 4)  =  0

(x - 4)2  =  0       Take the square root of both sides.

x - 4  =  0       Add  4  to both sides.

x  =  4

hectictar  Nov 3, 2017
Sort:

#1
+6335
+1

2x2 - 16x + 32  =  0

First divide through by  2 .

x2 - 8x + 16  =  0

Now we can factor the left side. What two numbers add to  -8  and multiply to  16  ?

-4 and -4  , so it factors like this..

(x - 4)(x - 4)  =  0

(x - 4)2  =  0       Take the square root of both sides.

x - 4  =  0       Add  4  to both sides.

x  =  4

hectictar  Nov 3, 2017

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