Question

Solve the equation using the quadratic formula 3x^2 =2(2x+1)

Answer 1

3x² = 2(2x+1)


Expand the brackets

3x² = 4x + 2


Rearrange

3x² - 4x - 2 = 0


Quadratic formula is

(-b ± √(b² - 4ac)) / 2a


Where

a = 3
b = -4
c = -2


Therefore, putting these values in to the quadratic formula:

x = 15.487
or
x = -3.487

Round the answers how you will.

Answer 2

Step 1: Make equation equal to Zero

3x^2 = 4x + 2


3x^2 - 4x - 2 


Step 2: use equation

a= 3 b = -4 c= -2 

after plugging in answer should be

(2 + or - sqrt 10) / 3