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(3x+1) tat ca mu 2-(3x-2)(2+3x)
Update:(3x+1)^2-(3x-2)(2+3x)=14
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(3x+1) tat ca mu 2-(3x-2)(2+3x)
Update:(3x+1)^2-(3x-2)(2+3x)=14
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Verified answer
(3x+1)^2-(3x-2)(2+3x)=14
<=> 9x^2 + 6x + 1 - 6x - 9x^2 + 4 + 6x = 14
<=> 6x = 14 - 1 - 4
<=> 6x = 9
<=> x = 9/6 hay x = 3/2
Chúc thành công
9x2 + 6x + 1 - 9x2 + 4 = 0
<=> 6x = -3 => x=-1/2