Question

plz tell how to do this sum
no spam or i will report
if possible send a step by step instructions ​

Answer 1

$\huge\mathfrak\red{✦ answer \: \: \: \: \: \: \: ✎}$

${a}^{4} - 11 {a}^{2} + 10$

$\: \: \: \: \: \: = {a}^{4} - 10 {a}^{2} - {a}^{2} + 10$

$\: \: \: \: \: \: = {a}^{2} ( {a}^{2} - 10) - 1( {a}^{2} - 10)$

$\: \: \: \: \: \: = ( {a}^{2} - 10)( {a}^{2} - 1)$

Ans.

$\: \: \: \: \: \: \: = ( {a}^{2} - 10)(a + 1)(a - 1)$

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