Math, asked by Ankitpanghal6048, 9 hours ago

tìm x, biết :(2x+3)^2+4x^2+6x

Answers

Answered by vikkiain
0

x =  \frac{ - 3}{2}  \:  \: và \:  \:  \: x =  \frac{ - 3}{4}

Step-by-step explanation:

Cho \:  \:  phép \:  \:  \:  \: (2x + 3)^{2}  + 4 {x}^{2}  + 6x = 0 \\ (2x) ^{2}  +  {3}^{2}  + 2 \times 2x \times 3 + 4 {x}^{2}  + 6x = 0 \\ 4 {x}^{2}  + 9 + 12x + 4 {x}^{2}  + 6x = 0 \\ 8 {x}^{2}  + 18x + 9 = 0 \\ 8 {x}^{2}  + 12x + 6x + 9 = 0 \\ 4x(2x + 3) + 3(2x + 3)  = 0 \\ (2x + 3)(4x + 3) = 0 \\ 2x + 3 = 0 \:  \:  \: và \:  \:  \: 4x + 3 = 0 \\ 2x =  - 3 \:   \: \: và \:  \:  \:  \: 4x =  - 3 \\ x =  \frac{ - 3}{2}  \:  \: và\:  \:  \: x =  \frac{ - 3}{4}

Answered by varunpratap
0

Answer:

-3/4,-3/2

Step-by-step explanation:

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