emmastan25 emmastan25

26-03-2021
Mathematics

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solve for x in the equation below, show all work

solve for x in the equation below show all work class=

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rejoicenyang rejoicenyang

26-03-2021

Step-by-step explanation:

(3x-1)(x+1)=3(3x-4+x²)

open the brackets

=3x²+3x-x-1=9x-12+3x²

=3x²+2x-1=9x-12+3x²

collecting like terms

=3x²-3x²+2x-9x=-12+1

=-7x=-11

=x=11/7

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