Datrys {l}{(-m+6)^2}{-(m-6)^2}

$$\left. \begin{array} { l } { ( - m + 6 ) ^ { 2 } } \\ { - ( m - 6 ) ^ { 2 } } \end{array} \right.$$

Enrhifo

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Camau Ateb

Defnyddio'r theorem binomaidd \left(a+b\right)^{2}=a^{2}+2ab+b^{2} i ehangu'r \left(-m+6\right)^{2}.

$$\left(-m\right)^{2}+12\left(-m\right)+36-\left(m-6\right)^{2}$$

Cyfrifo -m i bŵer 2 a chael m^{2}.

$$m^{2}+12\left(-m\right)+36-\left(m-6\right)^{2}$$

Defnyddio'r theorem binomaidd \left(a-b\right)^{2}=a^{2}-2ab+b^{2} i ehangu'r \left(m-6\right)^{2}.

$$m^{2}+12\left(-m\right)+36-\left(m^{2}-12m+36\right)$$

I ddod o hyd i wrthwyneb m^{2}-12m+36, dewch o hyd i wrthwyneb pob term.

$$m^{2}+12\left(-m\right)+36-m^{2}+12m-36$$

Cyfuno m^{2} a -m^{2} i gael 0.

$$12\left(-m\right)+36+12m-36$$

Tynnu 36 o 36 i gael 0.

$$12\left(-m\right)+12m$$

Lluosi 12 a -1 i gael -12.

$$-12m+12m$$

Cyfuno -12m a 12m i gael 0.

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Ffactor

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Camau Ateb

Gellir ffactorio’r gwahaniaeth rhwng sgwariau gan ddefnyddio’r rheol: a^{2}-b^{2}=\left(a-b\right)\left(a+b\right).

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Ystyriwch -2m+12. Ffactora allan 2.

$$2\left(-m+6\right)$$

Ailysgrifennwch y mynegiad cyfan wedi'i ffactorio. Symleiddio.

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