Question

25) Simplify: 3x (4x – 5 ) + 3 and find its value for x=3​

Answer 1

Step-by-step explanation:

3x (4x – 5 ) + 3

3×3 (4×3- 5) +3

9 ( 12-5) +3

9 (7) +3

9×7 + 3

63 +3

Therefore, Answer =66

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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