Page 101 - aljaber
P. 101
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. ()
. x 2 + 6x − 2 = 0
()
: ()
x 2 + 6x = 2 x
3
x 2 + 6x + 9 = 2 + 9
()
(x + 3)2 = 11
()
x + 3 = ± 11
x = −3 ± 11
.x2 = −3 − 11 x1 = −3 + 11
. x 2 + 6x + 11 = 0 ( )
x2 + 6x = −11
x 2 + 6x + 9 = −11 + 9
(x + 3)2 = −2
