Question

Solve by formula method
3x² - 15x + 12
= 0
​

Answer 1

Answer:

d= b^2-4ac

Step-by-step explanation:

D= b^2-4ac

=( -15)^2 -4× 3× 12

= 225- 144

= 81

x= [-b±√D]/2a

={ 15± √81}/2× 4

= 15±9/8

FOR POSITIVE=. 15+9/8

= 24/8

x = 3

FOR NEGATIVE= 15-9/8

x = 6/8 or 3/4 ANSWER

THIS IS THE PERFECT ANSWER OF YOUR QUESTION