Example 

Find the values of the given expressions. Also given that a = 2, b = 3, c = 1, and x = 2.

1. 8a + 5bc

         =       8.2 + 5.3.1

         =       16 + 15

         =       31

1. 9a + c

         =       9.2 + 1

         =       18 + 1

         =       19

1. x³

         =       2³

         =       2.2.2

         =       8

Now, what would be the value of 8abc, if one of the quantities a, b or c is zero. It will be zero and this is irrespective of other values. A factor which has its value as zero is called zero factor. Remember that every power of zero is zero.

Now is it that we only have quantities of the form 8ab or x³. No, we often come across quantities like     or      In mathematics, the    sign is referred to as a radical sign and at this point let us define what square root is. The square root of any quantity is that value whose square is equal to the given expression. That is,    = 2. If we square two we get four which is the required quantity under the radical sign. Similar to square root we have cube root     , the fourth root      and the fifth root     , etc........ roots. Only that we have to multiply the given quantity the required number of times to get the quantity under the radical sign. Now we look at a couple of examples as how to solve problems having the radical sign.    

 

Posted Date: 9/13/2012 2:37:02 AM | Location : United States

Ask an Expert

Related Discussions:- How to find value in polynomial?, Assignment Help, Ask Question on How to find value in polynomial?, Get Answer, Expert's Help, How to find value in polynomial? Discussions

Write discussion on How to find value in polynomial?
Your posts are moderated

Write your message here..

Related Questions

We know this equation a°=1.prove this?, we know that    A^m/A^m=1         ... we know that    A^m/A^m=1                    so A^(m-m)=1                    so A^0=1.....

How to multiplying rational expressions, how to Multiplying Rational Expres... how to Multiplying Rational Expressions ? To multiply fractions, or rational expressions, you must multiply the numerators and then multiply the denominators. Here's how it is

Calenders, on which date of the week does 4th december 2001 falls? on which date of the week does 4th december 2001 falls?

Normal to y=f(x) , If the normal to y=f(x) makes an angle of pie/4 with y-a... If the normal to y=f(x) makes an angle of pie/4 with y-axis at (1,1) , then f''(x) is eqivalent to? Ans) The normal makes an angle 135 degree with the x axis. also f ''(1)

Which of the following could the length of the base height, The area of a p... The area of a parallelogram can be expressed as the binomial 2x 2 - 10x. Which of the following could be the length of the base and the height of the parallelogram? To ?nd out

Direct variation, activity 6; it''s your turned activity 6; it''s your turned

An even function, Assume that   i)  Determine all the roots of f... Assume that   i)  Determine all the roots of f(x) = 0. ii)  Determine the value of k that makes h continuous at x = 3. iii)  Using the value of k found in (ii), sh

Division, How do i divide 200 by 4 How do i divide 200 by 4

What is a percentage, Q. What is a percentage? Ans. Percent  mean... Q. What is a percentage? Ans. Percent  means "per hundred", or "out of 100". A percentage can be written as a ratio, or fraction, where the denominator (bottom) is 100.

Calculus, I need help with my calculus I need help with my calculus