Page 127 - aljaber

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x = 2 ± 4 − 4 × 2 × (−3) = 2 ± 28
44

= 2±2 7 = 1±1 7
4 22

. ∆ = 16 − 4m :( ) ()

.∆ = 0

.m = 4 .16 − 4m = 0

α(2α) = a − 2 α + 2α = 6 :( ) ()

aa

( ) α=2

a

( ) 2α2 = a − 2

a

α

2  4  = a − 2
a2 a

8 =a −2
a
a2 − 2a = 8

a2 − 2a − 8 = 0

(a − 4)(a + 2) = 0

a +2 = 0 a−4 = 0

.a = −2 a = 4 ()
x :( )

.