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viktelen [127]
3 years ago
11

What is x please fast

B2%7D%20%20-%205%20%7Bx%7D%5E%7B2%7D%20%20%2B%209x" id="TexFormula1" title="3 {x}^{2} - 5x + 4x = 3 {x}^{2} - 5 {x}^{2} + 9x" alt="3 {x}^{2} - 5x + 4x = 3 {x}^{2} - 5 {x}^{2} + 9x" align="absmiddle" class="latex-formula">
​
Mathematics
2 answers:
GaryK [48]3 years ago
4 0

Answer:

3 {x}^{2}  - 5x + 4x = 3 {x}^{2}  - 5 {x}^{2}  + 9x \\ 3 {x}^{2}  - x =  - 2 {x}^{2}  + 9x \\ 3 {x}^{2}   + 2{x}^{2}  = 9x + x \\5  {x}^{2}  = 10x \\ 5x = 10 \\ x =  \frac{10}{5}  = 2 \\ x = 2 \\ thank \: you

stiv31 [10]3 years ago
4 0

Answer:

\rm x = 2

Step-by-step explanation:

\rm 3x  ^ { 2  }  -5x+4x=3x  ^ { 2  }  -5x  ^ { 2  }  +9x

\rm 3x^{2}-x=3x^{2}-5x^{2}+9x

\rm 3x^{2}-x=-2x^{2}+9x

\rm 3x^{2}-x+2x^{2}=9x

\rm 5x^{2}-x=9x

\rm 5x^{2}-x-9x=0

\rm 5x^{2}-10x=0

\rm 5x -10 =0

\rm x = 10 \div 5

\bold{x = 2}

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