Wiki User
∙ 12y agoIt will depend on where you put your parentheses.
Root 7 -( 1/root 7) is different from (root 7-1)/root 7.
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True, but a more helpful answer:
[sqrt(7) - 1]/[sqrt(7) + 1] - [sqrt(7) + 1]/[sqrt(7) - 1]
Multiplying the numerator and denominator of the first fraction by [sqrt(7) - 1]
and the second fraction by [sqrt(7) + 1]
= [sqrt(7) - 1]2/[7 - 1] - [sqrt(7) + 1]2/[7 - 1]
=[7 - 2*sqrt(7) + 1]/6 - [7 + 2*sqrt(7) + 1]/6
= 16/6 = 8/3
Wiki User
∙ 12y agoroot
-2
It is the solution to the equation or a root of the equation.
We're not sure what the question means by "root". It may be what's usuallyreferred to as the "solution" of the equation ... the number that 'm' must be inorder to make the equation a true statement. Here's how to find the 'solution':2m + 7 = 8 + mSubtract 7 from each side:2m = 1 + mSubtract 'm' from each side:m = 1
x2+3=124 x2=121 x= square root(121) x=11
Root means solution in this context.
The solution of the equation.
Using the quadratic equation formula: x = -5-/+ the square root of 7
-2
root
It is the solution to the equation or a root of the equation.
Such a value is said to be a solution, or a root, of the equation.
It is the solution; sometimes also called the root.
We're not sure what the question means by "root". It may be what's usuallyreferred to as the "solution" of the equation ... the number that 'm' must be inorder to make the equation a true statement. Here's how to find the 'solution':2m + 7 = 8 + mSubtract 7 from each side:2m = 1 + mSubtract 'm' from each side:m = 1
x2+3=124 x2=121 x= square root(121) x=11
Such a value is called a "solution" or "root" of an equation.
x^2 + 3x +7 = 0 doesn't factor neatly. Applying the quadratic equation, we find two imaginary solutions: (-3 plus or minus the square root of -19) divided by 2x = -1.5 + 2.179449471770337ix = -1.5 - 2.179449471770337iwhere i is the square root of negative 1