Question

3x²-2x-1=0( solve quadratic equation by factorisation)

Answer 1

Answer:

$3x {}^{2} - 3x + x - 1 \\ 3x(x - 1) + 1(x - 1) \\ (x - 1)(3x + 1)$

Answer 2

Step-by-step explanation:

ans = 3x²- 2x - 1 = 0

use factorisation method

3x² - 2x - 1 = 0

3x² - 3x + x - 1 = 0

3x ( x - 1 ) + 1 ( x - 1 ) = 0

( 3x + 1 ) ( x - 1 ) = 0

therefore , 3x + 1 = 0 or x - 1 = 0

3x = -1 x = 1 .

x = -½ .

x = -½ or 1 .