Question

simplify 3x (4x-5) + 3 find its value for x = 3
and first simplify​

Answer 1

Answer:

Step-by-step explanation:

3x (4x-5) + 3

12x^2-15x +3

for x = 3

(12*3^2)-(15*3)+3

108-45+3=66

or direct approach

(3*3)(4*3 -5) +3

9*7+3

66

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Answer 2

:

Mark Me As Brainliest And Thank Me If The Answer Is Useful.

-- :

3x(4x−5)+3=12x^2−15x+3

x=3 gives the value 12(9)−15×3+3

                             =108−45+3

                              =66