Maths-
General
Easy

Question

Use polynomial identities to factor the polynomials or simplify the expressions :
216 plus 27 y to the power of 12

The correct answer is: Hence, the factor form is 216 + 27y^12 = (6 + 3y^4) (36 - 18y^4 + 9y^8)


    ANSWER:
    Hint:
    open parentheses straight a cubed plus straight b cubed close parentheses equals left parenthesis straight a plus straight b right parenthesis open parentheses straight a squared minus ab plus straight b squared close parentheses, where a and b can be real values, variables or multiples of both.
    We are asked to use polynomial identities to factorize or simplify the expression.
    Step 1 of 2:
    The given expression is 216 plus 27 y to the power of 12.
    text  It can be written as  end text left parenthesis 6 right parenthesis cubed plus open parentheses 3 y to the power of 4 close parentheses cubed text . It is of the form  end text open parentheses a cubed plus b cubed close parentheses text  where  end text a equals 6 straight & b equals 3 y to the power of 4.
    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 216 plus 27 y to the power of 12 equals left parenthesis 6 right parenthesis cubed plus open parentheses 3 y to the power of 4 close parentheses cubed space space space space space space space space space space space end cell row cell equals open parentheses 6 plus 3 y to the power of 4 close parentheses open parentheses 6 squared minus left parenthesis 6 right parenthesis open parentheses 3 y to the power of 4 close parentheses plus open parentheses 3 y to the power of 4 close parentheses squared close parentheses end cell row cell equals open parentheses 6 plus 3 y to the power of 4 close parentheses open parentheses 36 minus 18 y to the power of 4 plus 9 y to the power of 8 close parentheses space space space space space space space space space space end cell end table
    Hence, the factor form is 216 plus 27 straight y to the power of 12 equals open parentheses 6 plus 3 straight y to the power of 4 close parentheses open parentheses 36 minus 18 straight y to the power of 4 plus 9 straight y to the power of 8 close parentheses
    Note:
    The multiplication of algebraic expressions is a method of multiplying two given expressions consisting of variables and constants.

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