The square of a number is 12 less than 7 times the number. What is the number?
–4 or –3
–4 or 3
–3 or 4
3 or 4

Question

Vocaloid · Answer

let "a number" be n

"12 less" implies n - 12

"7 times" implies 7n

"square of a number" implies n^2

7n - 12 = n^2

solve for n

EvieSwan2405 · Answer

The answer must be x=4, because 4*(4-1) = 4*3 =12. And, if negative numbers are allowed, x = -3, because (-3)(-4) = 12. That;s all such numbers.

I looked it up thats what I found

EvieSwan2405 · Answer