I.- Ecuaciones de 2º grado incompletas

1.1441.145
\large 7x^{2}=63\large x^{2}-24=120
1.1461.147
\large \frac{\: \: \: x^{2}}5{}=x\large 5x^{2}-3=42
1.1481.149
\large 3x=4x^{2}-2x\large 8x^{2}-56=34-2x^{2}
1.150
\large (x+1)(x-3)+3=0
1.151
\large (x+9)(x-9)=3(x-27)
1.152
\large (2x-3)(2x-3)=135
1.153
\large 3(2x-3)^{2}=4x(2x-9)+43
1.154
\large \frac{x^{2}-5x+4}{8-x}=5
1.155
\large \frac{5x^{2}}{6}=\frac{6}{125}
1.156
\large 5x^{2}-8x-\frac{3x^{2}}{4}=0
1.157
\large (2x+7)(2x-7)=(x+1)(x-1)
1.158
\large \frac{2}{x-2}=\frac{4x+8}{3x}
1.159
\large \frac{(x-2)(x+2)}{5}=(\frac{x}{3})^{2}
1.160
\large \frac{5x^{2}}{3}=x^{2}+24
1.161
\large 8x^{2}-10x-\frac{3x^{2}}{7}-43x=0
1.162
\large \frac{4x^{2}}{5}+x^{2}-5=\frac{x^{2}}{5}+10+x^{2}
1.163
\large 7x^{2}+\frac{6x}{3}-\frac{13x^{2}}{5}-\frac{21,6x}{2}=0

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