HP F2222A#ABA hp 9g_user's manual_English_E_HDP1SG18ES1.pdf - Page 74
HP F2222A#ABA - 9s Scientific Calculator Manual
UPC - 808736452823
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(1) 2 X 2 - 7 X + 5 = 0 [ ] RUN X 1 = 2.5 , X 2 = 1 2 [ 7 [ ] 5 [ ] (2) 25 X 2 - 70 X + 49 = 0 [ ] X = 1.4 25 [ ] [ ( - ) ] 70[ ] 49 E-74
E-74
RUN
(1) 2 X
2
– 7 X + 5 = 0
X
1
= 2.5 , X
2
= 1
[
]
2 [
] [ ( – ) ] ] 7
[
] 5
[
]
(2) 25 X
2
– 70 X + 49 = 0
X = 1.4
[
]
25 [
] [ ( – ) ]
70[
] 49