Simplify: 3x( 4x-5)+3 and hence find its value when x= 1 & x=3
Answers
Answered by
1
Answer:
3x(4x-5)+3
=12x^2 -15x +3
Step-by-step explanation:
when x=1
12(1)^2 -15(1) +3
12-15+3
=0
when X =3
12(3)^2 -15(3) +3
72-45+3
=30
Answered by
1
Answer: 24
Step-by-step explanation:
3x( 4x -5) +3 [x is 1 and x is 3] so, IF 1st x is 1 and 2nd x is 3
then, 3*1 [ (4*3) -5] +3
3[12-5] +3
[36-15] + 3
21 + 3
24 is the answer
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