Me podrían decir si están correctas estas fórmulas , y si no lo están me podrían decir en que me equivoque
[tex](a + b)^{2} = {a}^{2} + 2 \times a \times b + {b}^{2} [/tex]
[tex](y - x) ^{2} = {y}^{2} - 2y \times x + {x}^{2} [/tex]
[tex](2c + 5d) ^{2} = \: \: {40}^{2} + 20cd + {25d}^{2} [/tex]
[tex]( {9d - 5f)}^{2} = {81d}^{2} - 90df + {25f}^{2} [/tex]
[tex] {(13x + 10y)}^{2} = {169x}^{2} + 226xy + {100y}^{2} [/tex]
[tex] ({17x - 12y)}^{2} = {289x}^{2} - 290xy + {25}^{2} [/tex]
[tex]( {x - 8y)}^{2} = {x}^{2} - 16xy + {64y}^{2} [/tex]
[tex] {(21x + 13y)}^{2} = {441x}^{2} + 68xy + {169y}^{2} [/tex]
[tex] ({7x + 11y)}^{2} = {49x}^{2} + 36xy + {261y}^{2} [/tex]
[tex]( {x - y)}^{2} = {x}^{2} -2 xy + {y}^{2} [/tex]
[tex](a + b)^{2} = {a}^{2} + 2 \times a \times b + {b}^{2} [/tex]
[tex](y - x) ^{2} = {y}^{2} - 2y \times x + {x}^{2} [/tex]
[tex](2c + 5d) ^{2} = \: \: {40}^{2} + 20cd + {25d}^{2} [/tex]
[tex]( {9d - 5f)}^{2} = {81d}^{2} - 90df + {25f}^{2} [/tex]
[tex] {(13x + 10y)}^{2} = {169x}^{2} + 226xy + {100y}^{2} [/tex]
[tex] ({17x - 12y)}^{2} = {289x}^{2} - 290xy + {25}^{2} [/tex]
[tex]( {x - 8y)}^{2} = {x}^{2} - 16xy + {64y}^{2} [/tex]
[tex] {(21x + 13y)}^{2} = {441x}^{2} + 68xy + {169y}^{2} [/tex]
[tex] ({7x + 11y)}^{2} = {49x}^{2} + 36xy + {261y}^{2} [/tex]
[tex]( {x - y)}^{2} = {x}^{2} -2 xy + {y}^{2} [/tex]
Verified answer
Respuesta:
Explicación paso a paso:
[tex](a +b)^{2} = a^{2} + 2ab + b^{2} \\[/tex]
[tex](y - x)^{2} = y^{2} - 2yx + x^{2}[/tex]
[tex](2c+ 5d)^{2} = 4c^{2} + 20cd + 25d^{2}[/tex]
[tex](9d - 5f)^{2} = 81d^{2} - 90df + 25f^{2} \\(13x + 10y)^{2} = 169x^{2} + 260xy + 100y^{2}[/tex]
[tex](17x - 12y)^{2} = 289x^{2} - 408xy + 144y^{2}[/tex]
[tex](x- 8y)^{2} = x^{2} - 16xy + 64y^{2}[/tex]
[tex](21x+13y)^{2} = 441x^{2} + 546xy + 169y^{2}[/tex]
[tex](7x+11y)^{2} = 49x^{2} + 154xy + 121y^{2}[/tex]
[tex](x-y)^{2} = x^{2} -2xy + y^{2}[/tex]
Listo.
Saludos