Question

\((4x - 5) - 4x(4x - 2) = 10 - 6x\)

Answer 1

`(4x-5)-4x(4x-2) = 10 -6x`

`<=> 4x-5 - 16x^2 + 8x = 10 -6x`

`<=> 4x-5-16x^2 +8x -10 +6x =0`

`<=> -16x^2 +18x -15 =0`

`<=> 16x^2 -18x +15 =0`

`=> Delta = (-18)^2 -4*16*15 = -636 <0`

`=> PT vô nghiệm `

Answer 2

(4x - 5) - 4x(4x - 2) = 10 - 6x

`<=> 4x -5 - 4x² +8x -10 + 6x = 0 `
`<=> -16x² + 18x -15 = 0`
`<=> 16x²-18x+15 = 0`
Vì `\delta` ` = 18² - 4.16.15 = -636`

`=>` Pt vô nghiệm

Answer 3