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Mathematics
Azul Stark
30 April, 07:34
4x^2=16
Completing the square
+2
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Jaquan Ashley
30 April, 11:12
0
Easier to just solve, but anyway
if you insist on completint the square
4x^2+0x=16
(4x^2+0x) = 16
4 (x^2+0x) = 16
0/2=0, 0^2=16
4 (x^2+0x+0-0) = 16
4 ((x+0) ^2-0) = 16
4 (x+0) ^2-0=16
4 (x+0) ^2=16+0
4 (x+0) ^2=16
divide both sides by 4
(x+0) ^2=4
sqrt both sides don't forget to take positive and negative roots
x+0=+/-2
minus 0 from both sides
x=+/-2-0
x=+/-2
x=2 or - 2
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