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Problemau tebyg o chwiliad gwe

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\frac{3x^{2}-1}{x^{2}+5x+4}-\frac{2x}{x+1}+\frac{4}{x+4}
Tynnu 5 o 4 i gael -1.
\frac{3x^{2}-1}{\left(x+1\right)\left(x+4\right)}-\frac{2x}{x+1}+\frac{4}{x+4}
Ffactora x^{2}+5x+4.
\frac{3x^{2}-1}{\left(x+1\right)\left(x+4\right)}-\frac{2x\left(x+4\right)}{\left(x+1\right)\left(x+4\right)}+\frac{4}{x+4}
I ychwanegu neu dynnu mynegiannau, rhaid i chi eu ehangu i wneud eu enwaduron yr un fath. Lluosrif lleiaf cyffredin \left(x+1\right)\left(x+4\right) a x+1 yw \left(x+1\right)\left(x+4\right). Lluoswch \frac{2x}{x+1} â \frac{x+4}{x+4}.
\frac{3x^{2}-1-2x\left(x+4\right)}{\left(x+1\right)\left(x+4\right)}+\frac{4}{x+4}
Gan fod gan \frac{3x^{2}-1}{\left(x+1\right)\left(x+4\right)} a \frac{2x\left(x+4\right)}{\left(x+1\right)\left(x+4\right)} yr un dynodydd, tynnwch nhw drwy dynnu eu rhifiaduron.
\frac{3x^{2}-1-2x^{2}-8x}{\left(x+1\right)\left(x+4\right)}+\frac{4}{x+4}
Gwnewch y gwaith lluosi yn 3x^{2}-1-2x\left(x+4\right).
\frac{x^{2}-1-8x}{\left(x+1\right)\left(x+4\right)}+\frac{4}{x+4}
Cyfuno termau tebyg yn 3x^{2}-1-2x^{2}-8x.
\frac{x^{2}-1-8x}{\left(x+1\right)\left(x+4\right)}+\frac{4\left(x+1\right)}{\left(x+1\right)\left(x+4\right)}
I ychwanegu neu dynnu mynegiannau, rhaid i chi eu ehangu i wneud eu enwaduron yr un fath. Lluosrif lleiaf cyffredin \left(x+1\right)\left(x+4\right) a x+4 yw \left(x+1\right)\left(x+4\right). Lluoswch \frac{4}{x+4} â \frac{x+1}{x+1}.
\frac{x^{2}-1-8x+4\left(x+1\right)}{\left(x+1\right)\left(x+4\right)}
Gan fod gan \frac{x^{2}-1-8x}{\left(x+1\right)\left(x+4\right)} a \frac{4\left(x+1\right)}{\left(x+1\right)\left(x+4\right)} yr un dynodydd, adiwch nhw drwy adio eu rhifiaduron.
\frac{x^{2}-1-8x+4x+4}{\left(x+1\right)\left(x+4\right)}
Gwnewch y gwaith lluosi yn x^{2}-1-8x+4\left(x+1\right).
\frac{x^{2}+3-4x}{\left(x+1\right)\left(x+4\right)}
Cyfuno termau tebyg yn x^{2}-1-8x+4x+4.
\frac{x^{2}+3-4x}{x^{2}+5x+4}
Ehangu \left(x+1\right)\left(x+4\right).
\frac{3x^{2}-1}{x^{2}+5x+4}-\frac{2x}{x+1}+\frac{4}{x+4}
Tynnu 5 o 4 i gael -1.
\frac{3x^{2}-1}{\left(x+1\right)\left(x+4\right)}-\frac{2x}{x+1}+\frac{4}{x+4}
Ffactora x^{2}+5x+4.
\frac{3x^{2}-1}{\left(x+1\right)\left(x+4\right)}-\frac{2x\left(x+4\right)}{\left(x+1\right)\left(x+4\right)}+\frac{4}{x+4}
I ychwanegu neu dynnu mynegiannau, rhaid i chi eu ehangu i wneud eu enwaduron yr un fath. Lluosrif lleiaf cyffredin \left(x+1\right)\left(x+4\right) a x+1 yw \left(x+1\right)\left(x+4\right). Lluoswch \frac{2x}{x+1} â \frac{x+4}{x+4}.
\frac{3x^{2}-1-2x\left(x+4\right)}{\left(x+1\right)\left(x+4\right)}+\frac{4}{x+4}
Gan fod gan \frac{3x^{2}-1}{\left(x+1\right)\left(x+4\right)} a \frac{2x\left(x+4\right)}{\left(x+1\right)\left(x+4\right)} yr un dynodydd, tynnwch nhw drwy dynnu eu rhifiaduron.
\frac{3x^{2}-1-2x^{2}-8x}{\left(x+1\right)\left(x+4\right)}+\frac{4}{x+4}
Gwnewch y gwaith lluosi yn 3x^{2}-1-2x\left(x+4\right).
\frac{x^{2}-1-8x}{\left(x+1\right)\left(x+4\right)}+\frac{4}{x+4}
Cyfuno termau tebyg yn 3x^{2}-1-2x^{2}-8x.
\frac{x^{2}-1-8x}{\left(x+1\right)\left(x+4\right)}+\frac{4\left(x+1\right)}{\left(x+1\right)\left(x+4\right)}
I ychwanegu neu dynnu mynegiannau, rhaid i chi eu ehangu i wneud eu enwaduron yr un fath. Lluosrif lleiaf cyffredin \left(x+1\right)\left(x+4\right) a x+4 yw \left(x+1\right)\left(x+4\right). Lluoswch \frac{4}{x+4} â \frac{x+1}{x+1}.
\frac{x^{2}-1-8x+4\left(x+1\right)}{\left(x+1\right)\left(x+4\right)}
Gan fod gan \frac{x^{2}-1-8x}{\left(x+1\right)\left(x+4\right)} a \frac{4\left(x+1\right)}{\left(x+1\right)\left(x+4\right)} yr un dynodydd, adiwch nhw drwy adio eu rhifiaduron.
\frac{x^{2}-1-8x+4x+4}{\left(x+1\right)\left(x+4\right)}
Gwnewch y gwaith lluosi yn x^{2}-1-8x+4\left(x+1\right).
\frac{x^{2}+3-4x}{\left(x+1\right)\left(x+4\right)}
Cyfuno termau tebyg yn x^{2}-1-8x+4x+4.
\frac{x^{2}+3-4x}{x^{2}+5x+4}
Ehangu \left(x+1\right)\left(x+4\right).