Question

When 7 is subtracted from two third of the square of a number it becomes 17 find the number​

Answer 1

Answer: 6 or -6

hello,

Explanation:

Let say n the number

`(2)/(3) *n^2-7=17\\\Longrightarrow\ (2)/(3) *n^2=24\\\Longrightarrow\ n^2=(3*24)/(2)\\\Longrightarrow\ n^2=36\\\Longrightarrow\ (n-6)(n+6)=0\\\\n=6\ or\ n=-6\\`