Question

Please solve it. It will help me for my exam preparation. ​

Answer 1

The solution of the given expression is $[p^{2}(p-y)^{y-1} (p-y)^{y-2} -2p(p-y)^{y} (p-y)^{y-2} +7(p-y)^{y} (p-y)^{y-1}]/ (p-y)^{y} (p-y)^{y-1}(p-y)^{y-2}$

Given $p^{2} /(p-y)^{y} -2p/(p-y)^{y-1} +7/(p-y)^{y-2}$

We have to solve the above expression.

We know that expression is a combination of numbers, symbols, variables and coefficients, indeterminants. Expression shows relationship between variables. LCM is the smallest number that is divisible by both the numbers whose LCM has been taken. Coefficients are present in the beginning of variables. Symbols are arithmetic signs like addition, subtraction, multiplication and division, etc.

We have to take LCM of the expression and solve accordingly so that the expression can be solved =

$p^{2} /(p-y)^{y} -2p/(p-y)^{y-1} +7/(p-y)^{y-2}$=  $[p^{2}(p-y)^{y-1} (p-y)^{y-2} -2p(p-y)^{y} (p-y)^{y-2} +7(p-y)^{y} (p-y)^{y-1}]/ (p-y)^{y} (p-y)^{y-1}(p-y)^{y-2}$

Hence the expression  $p^{2} /(p-y)^{y} -2p/(p-y)^{y-1} +7/(p-y)^{y-2}$ is equal to = $[p^{2}(p-y)^{y-1} (p-y)^{y-2} -2p(p-y)^{y} (p-y)^{y-2} +7(p-y)^{y} (p-y)^{y-1}]/ (p-y)^{y} (p-y)^{y-1}(p-y)^{y-2}$

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