Question

simplify (x^2-4) (x^2+4)+16​

Answer 1

Answer:

(x² - 4)(x² + 4) + 16

(a+b)(a-b) = a² - b²

So, this is equal to:

(x²)² - 4² + 16

= x⁴ - 16 + 16

= x⁴