Question

(x²-4)²-9x²

find the answer
of this
​

Answer 1

Answer:

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

Step-by-step explanation:

${( {x}^{2} - 4) }^{2} - 9 {x}^{2} \\ {x}^{4} + 16 - 8 {x}^{2} - 9 {x}^{2} \\ {x}^{4} - 17 {x}^{2} + 16$