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electrical workelectrical work is done if a quantity of charge coulombs is moved between two points which are at different electrical potentials the
methodin this method we eliminate either x or y get the value of other variable and then substitute that value in either of the
before we look at simultaneous equations let us brush up some of the fundamentals first we define what is meant by an equation it is a
the effects of short circuitsa short circuit is a path for current where a path should not exist the path is generally considered to have a low
in this part we look at another method to obtain the factors of an expression in the above you have seen that x2 - 4x 4 x - 22 or
example factorize x2 - 4x 4if we substitute x 1 the value of the expression will be 12 - 41 4 1if we substitute x -1 the
above we have seen that 2x2 - x 3 and 3x3 x2 - 2x - 5 are the factors of 6x5 - x4 4x3 - 5x2 - x - 15 in this case we are able to find
high energy compounds primary need of the animal body from the nutrients is energy free energy is the term used to denote the energy
example multiply 3x5 4x3 2x - 1 and x4 2x2 4the product is given by3x5 x4 2x2 4 4x3 x4 2x2 4 2x x4 2x2 4 - 1 x4
example 1add 4x4 3x3 - x2 x 6 and -7x4 - 3x3 8x2 8x - 4we write them one below the other as shown below 4x4
binomials trinomials and polynomials which we have seen above are not the only type we can have them in a single variable say
thermistorsinsulators and semi-conductors behave in a different way when the temperature increases because their resistivity decreases that is the
alimentary tractthe alimentary tract and the secretary organs associated with it are involved in the process of digestion the sequence of
vitaminsmicronutrients are as important as major nutrients for the animal body vitamins are organic compounds required in minute amounts to assist
composition of plant and animal tissuesfood supplies nutrients popularly known as major and minor nutrients based on the quantities in which they
case 1 suppose we have two terms 8ab and 4ab on dividing the first by the second we have 8ab4ab 2 or 4ab8ab 12 depending on whether we consider
food chainthe land mass water bodies and atmosphere are the three endowments of nature on which the living beings have to depend for their
the product on multiplying - 4bc with 2a is - 8abc that is a term with minus sign multiplied with a term having a positive term gives a product which
the product of -7ab and 3ab is -7 x 3 a2 b2 -21a2 b2 in other words a term with minus sign when multiplied with a term having a positive
case 1 suppose we have two terms 7ab and 3ab when we multiply these two terms we get 7ab x 3ab 7 x 3 a1 1 b1 1 therefore
in this case the first point we have to remember is that we do not get a single value when we add two or more terms which are unlike in
suppose we are required to find the difference between 3abc and 7abc we look at two scenarios the value we would obtain by subtracting a
case 1 suppose we are given expressions like 3abc and 7abc and asked to compute their sum if this is the case we should not worry much