Question

Factorise -
$9x² - (x²-4)²$
Ans is (x+4)(x-1)(1+x)(4-x)
Explain with full steps​

Answer 1

Answer:

Hey mate!!!

Your Answer.

$9{x}^{2} - {x}^{4} - 16 + 8 {x}^{2}$

$- {x}^{4} + 17 {x}^{2} - 16$

$( {x}^{2} - 1)( {x}^{2} - 16)$

$(x - 1)(x + 1)(x + 4)(x - 4)$

hope it helps

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