Enrhifo
\left(n-11\right)\left(n+1\right)
Ehangu
n^{2}-10n-11
Rhannu
Copïo i clipfwrdd
25-10n+n^{2}-4\times 3\times 3
Defnyddio'r theorem binomaidd \left(a-b\right)^{2}=a^{2}-2ab+b^{2} i ehangu'r \left(5-n\right)^{2}.
25-10n+n^{2}-12\times 3
Lluosi 4 a 3 i gael 12.
25-10n+n^{2}-36
Lluosi 12 a 3 i gael 36.
-11-10n+n^{2}
Tynnu 36 o 25 i gael -11.
25-10n+n^{2}-4\times 3\times 3
Defnyddio'r theorem binomaidd \left(a-b\right)^{2}=a^{2}-2ab+b^{2} i ehangu'r \left(5-n\right)^{2}.
25-10n+n^{2}-12\times 3
Lluosi 4 a 3 i gael 12.
25-10n+n^{2}-36
Lluosi 12 a 3 i gael 36.
-11-10n+n^{2}
Tynnu 36 o 25 i gael -11.
Enghreifftiau
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\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
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\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}