Question

factorise the following: 3x²-x-4

Answer 1

Answer:

(3x -4) (x+1)

Step-by-step explanation:

3x² - x - 4

3x²-4x + 3x -4

x(3x-4) + 1( 3x-4)

(3x -4) (x+1)

Answer 2

3x² - x - 4 = (3x - 4) (x + 1)

Given :

The expression 3x² - x - 4

To find :

To factorise the expression

Solution :

Step 1 of 2 :

Write down the given expression

Here the given expression is 3x² - x - 4

Step 2 of 2 :

Factorise the expression

3x² - x - 4

= 3x² - (4 - 3)x - 4

= 3x² - 4x + 3x - 4

= x(3x - 4) + 1( 3x - 4)

= (3x - 4) (x + 1)

∴ 3x² - x - 4 = (3x - 4) (x + 1)

━━━━━━━━━━━━━━━━

Learn more from Brainly :-

$1.$ Find factorisation x⁴+2x²+9

https://brainly.in/question/16207943

2. Factorize: x2 – 9y2 + 2x + 1

https://brainly.in/question/50568785

#SPJ3