Answer:
5 and 3
Step-by-step explanation:
Making an equation,
Let x = the number
x^2 + 15 = 8x
Transfering to one side,
x^2 - 8x + 15 = 0
Factor,
(x - 5)(x - 3)
Equate to zero
x-5=0
x=5
x-3=0
x=3
Since all values are positive, it means there are 2 possible answers, 3 and 5.
let x be the number.
sum of the square of a number and 15 (x²+15) is the same as eight times the number (x²+15=8x)
solve:
x²+15=8x
x²-8x+15=0
(x-5)(x-3)=0
x1: x-5=0
x2: x-3=0
therefore the numbers are 5 and 3
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Answers & Comments
Answer:
5 and 3
Step-by-step explanation:
Making an equation,
Let x = the number
x^2 + 15 = 8x
Transfering to one side,
x^2 - 8x + 15 = 0
Factor,
(x - 5)(x - 3)
Equate to zero
x-5=0
x=5
x-3=0
x=3
Since all values are positive, it means there are 2 possible answers, 3 and 5.
Answer:
let x be the number.
sum of the square of a number and 15 (x²+15) is the same as eight times the number (x²+15=8x)
solve:
x²+15=8x
x²-8x+15=0
(x-5)(x-3)=0
x1: x-5=0
x=5
x2: x-3=0
x=3
therefore the numbers are 5 and 3