Question

Factoris t4-81








maths​

Answer 1

Step-by-step explanation:

Given that;

${t}^{4} - 81$

So, we can also Write;

${t}^{4} = {( {t}^{2} )}^{2}$

and

$81 = {(9)}^{2}$

Now the given equation become;

${( {t}^{2} )}^{2} - {( 9 )}^{2}$

So by Using Formulae;

${x}^{2} - {y}^{2} = (x - y)(x + y)$

Fators Of given Equation are;

$( {t}^{2} - 9)( {t}^{2} + 9)$

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