Maths-
General
Easy

Question

Use polynomial identities to factor the polynomials or simplify the expressions :
4 x squared minus y to the power of 6

The correct answer is: Thus, the factor is: 4x^2 - y^6 = (2x-y^3) (2x + y^3).


    ANSWER:
    Hint:
    open parentheses a squared minus b squared close parentheses equals left parenthesis a minus b right parenthesis left parenthesis a plus b right parenthesis, where a and b can be real values, variables or multiples of both.
    We are asked to use polynomial identities to simplify the given expressions.
    Step 1 of 2:
    The given expression is 4 x squared minus y to the power of 6.text  It can be written as  end text left parenthesis 2 x right parenthesis squared minus open parentheses y cubed close parentheses squared text . This is of the form  end text open parentheses a squared minus b squared close parentheses text  where  end text a equals 2 x straight & b equals y cubed text .  end text
    Step 2 of 2:
    Use the polynomial identity to simplify the expression;
    table attributes columnalign right left right left right left right left right left right left columnspacing 0em 2em 0em 2em 0em 2em 0em 2em 0em 2em 0em end attributes row cell 4 x squared minus y to the power of 6 equals left parenthesis 2 x right parenthesis squared minus open parentheses y cubed close parentheses squared end cell row cell equals open parentheses 2 x minus y cubed close parentheses open parentheses 2 x plus y cubed close parentheses space space space space space space end cell end table
    Thus, the factor is: .4 straight x squared minus straight y to the power of 6 equals open parentheses 2 straight x minus straight y cubed close parentheses open parentheses 2 straight x plus straight y cubed close parentheses
    Note:
    Polynomial identities are used to simplify or to find the prduct of expressions. It reduces space and time during solving.

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