Question

Fachrise
3x^2-x-4
..........................​

Answer 1

Answer:

$3x^2-x-4\\= 3x^2+3x-4x-4\\= 3x(x+1)-4(x+1)\\= (3x-4)(x+1)$

Answer 2

Solution

Factorising 3x² - x - 4

→ 3x² - x - 4

→ 3x² - 4x + 3x - 4

→ x(3x - 4) + 1(3x - 4)

→ (x + 1) (3x - 4)

Hence,

• x = -1
• x = 4/3

$\rule{200}3$

Extra shots

Steps to factorise quadratics

★ Step 1 - Write the equation in the correct form.

★ Step 2 - Use a factoring strategies to factor the problem.

★ Step 3 - Use the Zero Product Property and set each factor containing a variable equal to zero.