Q = x^2 + y^2 + z^2 + x^2 – y^2 + z^2 + x^2 + y^2 – z^2 14/08/2021 Bởi Quinn Q = x^2 + y^2 + z^2 + x^2 – y^2 + z^2 + x^2 + y^2 – z^2
Q=$x^{2}$+$2^{2}$+$z^{2}$+$x^{2}$-$y^{2}$+ $z^{2}$+$x^{2}$+$y^{2}$- $z^{2}$ =>Q=($x^{2}$+$x^{2}$+$x^{2}$)+($y^{2}$-$y^{2}$+$y^{2}$)+($z^{2}$-$z^{2}$+$z^{2}$) =>Q=$3x^{2}$+$y^{2}$+$z^{2}$ học tốt!!! Bình luận
`Q = x^2 + y^2 + z^2 + x^2 – y^2 + z^2 + x^2 + y^2 – z^2` `Q=(x^2 + x^2 + x^2 ) + (y^2 – y^2 +y^2 )+(x^2 – z^2 + z^2)` `Q= 3x^2 + y^2 + z^2` Bình luận
Q=$x^{2}$+$2^{2}$+$z^{2}$+$x^{2}$-$y^{2}$+ $z^{2}$+$x^{2}$+$y^{2}$- $z^{2}$
=>Q=($x^{2}$+$x^{2}$+$x^{2}$)+($y^{2}$-$y^{2}$+$y^{2}$)+($z^{2}$-$z^{2}$+$z^{2}$)
=>Q=$3x^{2}$+$y^{2}$+$z^{2}$
học tốt!!!
`Q = x^2 + y^2 + z^2 + x^2 – y^2 + z^2 + x^2 + y^2 – z^2`
`Q=(x^2 + x^2 + x^2 ) + (y^2 – y^2 +y^2 )+(x^2 – z^2 + z^2)`
`Q= 3x^2 + y^2 + z^2`