simplify 3x (4x - 5) + 3, find its value for x= -1 . write simplified equation.
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Answer:
simplify the equation and then put the value of x wherever x comes.
Step-by-step explanation:
3x(4x-5)+3
(3x*4x)+ (3x*-5) [multiplying inside the bracket]
= 12x²-15x+3
hence now put x=-1 wherever you see x
12(-1)²-15(-1)+3=. 30 is the answer
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