Question

the positive no Which is less than its square by 30​

Answer 1

number is 30 less than its square

let;

x = the number

x = x2 - 30

x2 - x - 30 = 0

factor :

-30

/ \

5 -6 = -1

(x + 5)(x - 6) = 0

so the number could be either -5 or 6

Answer 2

Answer:

let;

x = the number

x = x2 - 30

x2 - x - 30 = 0

factor :

-30

/ \

5 -6 = -1

(x + 5)(x - 6) = 0

so the number could be either -5 or 6