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Q: The sum of twice a number plus 13 is 75?

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2(8 + 5) = 2(13) = 26

x+13 x+13

(x + 3)^2 - 13 = (x + 2)^2 x^2 + 6x + 9 -13 = x^2 + 4x + 4 x^2 + 6x - 4 = x^2 + 4x + 4 6x - 4x = 4 + 4 2x = 8 x = 4

Then the number is 3

13 & 7

Related questions

2n+13

2n+13

4

4

13 and 26

If the number (count) of odd values to sum is odd, then the answer is odd.If the number (count) of odd values to sum is even, then the answer is even.

[(x+3)^2] - [(x+2)^2] = 13 ==> 2x = 8 ==> x = 4. the number is 4!

If you mean: (x+3)^2 = (x+2)^2 +13 Then the value of the number x works out as 4

2(8 + 5) = 2(13) = 26

3 + 23 7 + 19 13 + 13

the sum of 67 + 13 = 80

The number is 4 (4+3) * (4+3) = 49 (4+2) * (4+2) = 36 49 - 36 = 13

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