Question

. Simplify 3x (4x - 5) + 3 and find its value for x = 3​

Answer 1

Answer:

The value is 66.

Step-by-step explanation:

3x (4x - 5) + 3

12x² - 15x + 3

Put x = 3

12(3)² - 15(3) + 3

12(9) - 45 + 3

108 - 45 + 3

111 - 45

= 66

Answer 2

:

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-- :

3x(4x−5)+3=12x^2−15x+3

x=3 gives the value 12(9)−15×3+3

                             =108−45+3

                              =66