Question

If p (x) = x4 + 2x2 + 1 and q (x) = x4 – 2x2 + 1, find p (x) -q (x).
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Answer 1

Answer:

the answer is 4x2

Step-by-step explanation:

p(X)-q(X) = x4 + 2x2 + 1 - ( x4 - 2x2 + 1 )

p(X)-q(X) = x4 + 2x2 + 1 - x4 + 2x2 - 1 )

p(X)-q(X) = 2x2 + 2x2

p(X)-q(X) = 4x2

Answer 2

Answer:

p(x) - q(x) = 4x²

Step-by-step explanation:

p(x) - q(x)

= $x^{4}$ + 2x² + 1 - ($x^{4}$ - 2x² + 1)  ← distribute parenthesis by - 1

= $x^{4}$ + 2x² + 1 - $x^{4}$ + 2x² - 1 ← collect like terms

= 4x²