Вопрос школьника по предмету Алгебра
Розвяжіть рівняння:
1) 2х²-3х+1
_______ = 1
(х+3)(х-1)
Ответ учителя по предмету Алгебра
1) 2х^2 — 3х + 1 = 2( Х — 0,5 )( x — 1 )
D = 9 — 8 = 1
X1 = ( 3 + 1 ) : 4 = 1
X2 = ( 3 — 1 ) : 4 = 0,5
2) ( ( 2( x — 0,5 )( x — 1 )) / ( ( x + 3 )( x — 1 )) = 1
X не равен ( — 3 ) ; 1
( 2( x — 0,5 )) / ( x + 3 ) = 1
2x — 1 = x + 3
X = 4
Ответ 4
Похожие вопросы от пользователей
1. Look at this! They ____ a new magazine.
a) are reading b) read c) is reading d) have read
2. A lot of tourists______ to Buckingham Palace every year.
a) come b) are coming c) came d) is coming
3. There ________ many places to visit in London.
a) is b) will be c) are) d)has
4. She _______ her grandmother last week.
a) visit b) has visited c) visited d) have visited
5. They ____ tennis next week.
a) play b) played c) will play d) plays
6. Have you ever _____ to any museums in England?
a) been b) be c) was d) were
7. The boys _____ a video in their room now.
a) have watched b) is watching c) are watching d) watches
Ёжик, вышедший вчера из тумана, снова взялся за старое и начал грабить чужие запасы на зиму, для того чтобы ежата,прячущиеся в родном домике, всю зиму могли лакомиться деликатесами