Questions and Videos on Multiplication and Division of Radicals, within Algebra

Feb 28, 2016 · Let's do that: 15^2+20^2=c^2, which we can rewrite as 225+400=c^2. This can be simplified to 625=c^2, and to solve for c, we just need to get rid of the square. To do that, we …

5.56 All you need to do is take a calculator then press this sign sqrt then put the number under it.

x=-6+sqrt5, x=-6-sqrt5 Depending on what you're more familiar with, you can either use the quadratic formula or the completing the square technique. I'm going to pick completing the …

Jan 29, 2017 · Tangent Equation: y = x+1 Normal Equation: \\ y = -x+1 The gradient of the tangent to a curve at any particular point is given by the derivative of the curve at that point. The …

Explanation: Anything to the power of #0# equals 1. #n^0=1# A number to the power of #1/2# is the square root of that number. #n^ (1/2)=root (2) (n^1)=sqrt (n)#

How do I find the equation for a tangent line without derivatives? How do you find the equation of a normal line if you know the equation of the tangent line? If my tangent line at point (4,8) has …

Start by simplifying the expression a little. You should know two formulae for indices (there are more, but these two are relevant): 1 x = x−1 a√xb = xb a From these we can see that 2 4√x3 = …

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See details below We can make the variable change t=x^2. With this change we obtain t^2-9t+18=f (t). If we are lookin form zeros od f, then t^2-9t+18=0. Apliying knowed formula t= (-b+ …