Best Answer

The formula for this is:

2x2 + x = 10

Realizing that the answer must be a small whole number, you can substitute in one of the smallest, such as 2, which works. However, if you intend to use the quadratic equation to solve this, convert the formula to

2x2 + x - 10 = 0

a = 2, b = 1, and c = -10

x = (-1 ± √(12 - (4*2*-10)) ) / 2*2

= (-1 ± √(1- -80)) / 4

= (-1 ± √81) / 4

= (-1 ± 9) / 4

= -10/4 or 8/4

Since -10/4 is -2.5 it cannot be this if it is a whole number, but it can be 8/4 which is 2.

Q: Find the whole number such that twice its square added to itself makes 10?

Write your answer...

Submit

Still have questions?

Continue Learning about Other Math

The number is the square root of 128 times the square root of 128 = 128

for example 9 it is a square number beacause 3 multiplied by itself equals 9 and 3 by 3 in an array makes a square not a rectangle

The square root of a number is the numeral that makes that number when multiplied by itself- for example, 7 is the square root of 49, because 7 x 7 = 49; 5 is the square root of 25, because 5 x 5 = 25, and so on.

the number when multiplied by itself makes 16 = 4

1.

Related questions

6

12 Just divide by 2

The number is the square root of 128 times the square root of 128 = 128

6- 6 plus 6 is 12

I don't know if this is what you mean, but to make a normal number a square number, you have to times it by itself*****I suspect though, that the answer is as follows:A square number is one that is the product of some integer multiplied by itself. This second integer is the square root of the original number. Thus, 9 is a square number since 3*3 = 9

35, which makes 66 squared.

for example 9 it is a square number beacause 3 multiplied by itself equals 9 and 3 by 3 in an array makes a square not a rectangle

Since the square root of a number is the "number times itself that equals the original number," it makes sense that the larger the original number, then the larger the square root. The value of the square root of 2 will be greater than the value of the square root of 1.5.

No number, by itself, makes it true.

no because no one whole number multiplied by itself makes 999, the square root of 999 is 31.60696.....not a whole number nearest square numbers are 961 (31 squared) and 1024 (32 squared)

the number when multiplied by itself makes 16 = 4

The square root of a number is the numeral that makes that number when multiplied by itself- for example, 7 is the square root of 49, because 7 x 7 = 49; 5 is the square root of 25, because 5 x 5 = 25, and so on.