$3^{2}$ $( x + 4)$ $-$ $5^{2}$ $= 5 .$$2^{2}$ 12/11/2021 Bởi Mackenzie $3^{2}$ $( x + 4)$ $-$ $5^{2}$ $= 5 .$$2^{2}$
Đáp án: $3^{2}$ $( x + 4)$ $-$ $5^{2}$ $= 5 .$$2^{2}$ $9$ $(x + 4)$ $-$ $25$ $= 5 . 4$ $9$ $(x + 4)$ $-$ $25$ $= 20$ $9$ $(x + 4)$ $= 20 + 25$ $9$ $(x + 4)$ $= 45$ $(x + 4 )$ $= 45 : 9$ $( x + 4 )$ $=5$ `x` `= 5 – 4` `x` `= 1` Vậy `x=1` Bình luận
Đáp án: `3^2 (x + 4) – 5^2 = 5 . 2^2` `9 . (x + 4) – 25 = 5 . 4` `9 . (x + 4) – 25 = 20` `9 . (x + 4) = 20 + 25` `9 . (x + 4) = 45` `x + 4 = 45 : 9` `x + 4 = 5` `x = 5 – 4` `x = 1` Vậy `x = 1` Bình luận
Đáp án:
$3^{2}$ $( x + 4)$ $-$ $5^{2}$ $= 5 .$$2^{2}$
$9$ $(x + 4)$ $-$ $25$ $= 5 . 4$
$9$ $(x + 4)$ $-$ $25$ $= 20$
$9$ $(x + 4)$ $= 20 + 25$
$9$ $(x + 4)$ $= 45$
$(x + 4 )$ $= 45 : 9$
$( x + 4 )$ $=5$
`x` `= 5 – 4`
`x` `= 1`
Vậy `x=1`
Đáp án:
`3^2 (x + 4) – 5^2 = 5 . 2^2`
`9 . (x + 4) – 25 = 5 . 4`
`9 . (x + 4) – 25 = 20`
`9 . (x + 4) = 20 + 25`
`9 . (x + 4) = 45`
`x + 4 = 45 : 9`
`x + 4 = 5`
`x = 5 – 4`
`x = 1`
Vậy `x = 1`