phân tích thành nhân tử: 3x^2+x-2=0 2x^2+3x-2=0 30/07/2021 Bởi Elliana phân tích thành nhân tử: 3x^2+x-2=0 2x^2+3x-2=0
` 3x^2 + x – 2 ` ` = 3x^2 + 3x – 2x – 2 ` ` = 3x(x + 1) – 2(x + 1) ` ` = (3x – 2)(x + 1) ` ` 2x^2 + 3x – 2 ` ` = 2x^2 + 4x – x – 2 ` ` = 2x(x + 2) – (x + 2) ` ` = (2x – 1)(x + 2) ` Bình luận
`3x^2+x-2` `= 3x(x + 1) – 2(x + 1)` `= (3x – 2)(x + 1)` `———-` `2x^2 + 3x – 2` `= 2x(x + 2) – (x + 2)` `= (2x – 1)(x + 2)` Xin hay nhất ! Bình luận
` 3x^2 + x – 2 `
` = 3x^2 + 3x – 2x – 2 `
` = 3x(x + 1) – 2(x + 1) `
` = (3x – 2)(x + 1) `
` 2x^2 + 3x – 2 `
` = 2x^2 + 4x – x – 2 `
` = 2x(x + 2) – (x + 2) `
` = (2x – 1)(x + 2) `
`3x^2+x-2`
`= 3x(x + 1) – 2(x + 1)`
`= (3x – 2)(x + 1)`
`———-`
`2x^2 + 3x – 2`
`= 2x(x + 2) – (x + 2)`
`= (2x – 1)(x + 2)`
Xin hay nhất !