8th Class Mathematics Sample Paper Mathematics Sample Paper - 6

  • question_answer
    Simplify: \[{{\left( \frac{3}{4}x-\frac{4}{3}y \right)}^{2}}+2xy\]

    Answer:

    \[{{\left( \frac{3}{4}x-\frac{4}{3}y \right)}^{2}}+2xy\]
    \[\Rightarrow \] \[{{\left( \frac{3}{4}x \right)}^{2}}-2\left( \frac{3}{4}x \right)\left( \frac{4}{3}y \right)+{{\left( \frac{4}{3}y \right)}^{2}}+2xy\]
    \[\Rightarrow \,\,\,\,\frac{9}{16}{{x}^{2}}-2xy+\frac{16}{9}{{y}^{2}}+2xy\]
    \[\Rightarrow \,\,\,\,\frac{9}{16}{{x}^{2}}+\frac{16}{9}{{y}^{2}}\]


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