please advise with the equation - please please calculate the result as you did it (x-2) whole on the second - (x + 1) (x-4) = 3x-6 divided by 2 please advise :)

Please advise :)
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1 Answer

Answer :

(x-2) 2 - (x + 1) (x-4) = (3x - 6) / 2 -> first parenthesis according to formula (A - B) 2, multiply the second: (x2 - 4x + 4) - (x2 - 4x + x - 4) = (3x - 6) / 2 - in the left part pay attention to minus before the bracket, it is necessary to turn the signs x2 - 4x + 4 - x2 + 4x - x + 4 = (3x - 6) / 2 - merge what is on the left side 8 - x = (3x - 6) / 2 - now multiply both sides by two, on the right side we will shorten the two in the denominator 16 - 2x = 3x - 6 - we will transfer to the other side 5x = 22 x = 22/5 complete solution eg here: https://www.wolframalpha.com/input/?i=(x-2)%5E2+-+(x%2B1)(x-4)+%3D+ (3x + - + 6)% 2F2   
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