Maths-
General
Easy

Question

The LCM of the polynomials 5 open parentheses x squared minus 2 x close parentheses left parenthesis x minus 6 right parenthesis squared straight & 2 x open parentheses x squared minus 4 close parentheses left parenthesis x minus 6 right parenthesis squared is.

hintHint:

The expansions of the identities are:
open parentheses x squared minus a squared close parentheses equals left parenthesis x plus a right parenthesis left parenthesis x minus a right parenthesis
left parenthesis x plus a right parenthesis left parenthesis x plus b right parenthesis equals x squared plus left parenthesis a plus b right parenthesis x plus a b
We are asked to find the LCM of the given expression.

The correct answer is: The LCM as (x - 6)2 (x -2) (x + 2) 8x


    Step 1 of 2:
    Factorize each expression;
    Consider 8 open parentheses x squared minus 2 x close parentheses left parenthesis x minus 6 right parenthesis squared colon
    8 open parentheses x squared minus 2 x close parentheses left parenthesis x minus 6 right parenthesis squared equals 8 x left parenthesis x minus 2 right parenthesis left parenthesis x minus 6 right parenthesis squared
    Similarly, factorize 2 x open parentheses x squared minus 4 close parentheses left parenthesis x minus 6 right parenthesis squared
    2 x open parentheses x squared minus 4 close parentheses left parenthesis x minus 6 right parenthesis squared equals 2 x open parentheses x squared minus 2 squared close parentheses left parenthesis x minus 6 right parenthesis squared
    equals 2 x left parenthesis x minus 2 right parenthesis left parenthesis x plus 2 right parenthesis left parenthesis x minus 6 right parenthesis squared
    Step 2 of 2:
    Analyze the factors of these expressions;
    8 open parentheses x squared minus 2 x close parentheses left parenthesis x minus 6 right parenthesis squared equals 8 x left parenthesis x minus 2 right parenthesis left parenthesis x minus 6 right parenthesis squared
    2 x open parentheses x squared minus 4 close parentheses left parenthesis x minus 6 right parenthesis squared equals 2 x left parenthesis x minus 2 right parenthesis left parenthesis x plus 2 right parenthesis left parenthesis x minus 6 right parenthesis squared
    Identify each factors most frequent occurrence. Highlight all most frequently occurring factors, and then find the product of the highlighted factors. The product would be the LCM.
    Thus, we have The LCM as left parenthesis x minus 6 right parenthesis squared left parenthesis x minus 2 right parenthesis left parenthesis x plus 2 right parenthesis 8 x:

    LCM of two values are their least common multiples.

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