Enrhifo
\frac{15\left(40-x\right)^{2}}{2}
Ehangu
\frac{15x^{2}}{2}-600x+12000
Graff
Rhannu
Copïo i clipfwrdd
0.3\left(40000-2000x+25x^{2}\right)
Defnyddio'r theorem binomaidd \left(a-b\right)^{2}=a^{2}-2ab+b^{2} i ehangu'r \left(200-5x\right)^{2}.
12000-600x+7.5x^{2}
Defnyddio’r briodwedd ddosbarthu i luosi 0.3 â 40000-2000x+25x^{2}.
0.3\left(40000-2000x+25x^{2}\right)
Defnyddio'r theorem binomaidd \left(a-b\right)^{2}=a^{2}-2ab+b^{2} i ehangu'r \left(200-5x\right)^{2}.
12000-600x+7.5x^{2}
Defnyddio’r briodwedd ddosbarthu i luosi 0.3 â 40000-2000x+25x^{2}.
Enghreifftiau
Hafaliad cwadratig
{ x } ^ { 2 } - 4 x - 5 = 0
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y = 3x + 4
Rhifyddeg
699 * 533
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\left[ \begin{array} { l l } { 2 } & { 3 } \\ { 5 } & { 4 } \end{array} \right] \left[ \begin{array} { l l l } { 2 } & { 0 } & { 3 } \\ { -1 } & { 1 } & { 5 } \end{array} \right]
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\left. \begin{cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end{cases} \right.
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Integreiddiad
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Terfynau
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}