Question

) Simplify →
3x ( 4x - 5) +3 and find it's value for x = 3.
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Answer 1

Answer:

12x² - 15x +3 and for x=3 it is 66

Step-by-step explanation:

3x (4x -5) + 3

12x² - 15x +3

substituting x=3

12(3)² - 15(3) + 3

108 -45 +3

66

Answer 2

If x=3, then

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

=9(12-5)+3=9(7)+3=63+3=66

Therefore the answer is 66.