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Find the whole number such that twice its square added to itself makes 10?
Wiki User
∙ 15y ago
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.
Wiki User
∙ 15y ago
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What number multiplied by itself makes 128?
The number is the square root of 128 times the square root of 128 = 128
Why square numbers called that name?
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
A number multiplied by itself make 16 what is the number?
the number when multiplied by itself makes 16 = 4
What does the name square root mean?
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.
Which is the smallest number which when added to an odd number makes the sum an even number?
1.
What positive number makes 12 when added to its square?
6
What number added to itself makes 24?
12 Just divide by 2
What number multiplied by itself makes 128?
The number is the square root of 128 times the square root of 128 = 128
What number added to itself makes 12?
6- 6 plus 6 is 12
What makes a number a square number?
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
what is the least number to be added to 4321 to make it a perfect square?
35, which makes 66 squared.
Why square numbers called that name?
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
Does the square root of 2 or 1.5 have the greater value?
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.
What makes number makes this statement 86.45cm true?
No number, by itself, makes it true.
Is 999 a squared number?
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)
A number multiplied by itself make 16 what is the number?
the number when multiplied by itself makes 16 = 4
What does the name square root mean?
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.
