Enrhifo
-\frac{\left(x-5\right)^{2}}{2}-1
Ehangu
-\frac{x^{2}}{2}+5x-\frac{27}{2}
Graff
Rhannu
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-\frac{1}{2}\left(x^{2}-10x+25\right)-1
Defnyddio'r theorem binomaidd \left(a-b\right)^{2}=a^{2}-2ab+b^{2} i ehangu'r \left(x-5\right)^{2}.
-\frac{1}{2}x^{2}+5x-\frac{25}{2}-1
Defnyddio’r briodwedd ddosbarthu i luosi -\frac{1}{2} â x^{2}-10x+25.
-\frac{1}{2}x^{2}+5x-\frac{27}{2}
Tynnu 1 o -\frac{25}{2} i gael -\frac{27}{2}.
-\frac{1}{2}\left(x^{2}-10x+25\right)-1
Defnyddio'r theorem binomaidd \left(a-b\right)^{2}=a^{2}-2ab+b^{2} i ehangu'r \left(x-5\right)^{2}.
-\frac{1}{2}x^{2}+5x-\frac{25}{2}-1
Defnyddio’r briodwedd ddosbarthu i luosi -\frac{1}{2} â x^{2}-10x+25.
-\frac{1}{2}x^{2}+5x-\frac{27}{2}
Tynnu 1 o -\frac{25}{2} i gael -\frac{27}{2}.
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