What is (3x4 + 2x2 - 6) subtracted from (4x4 + 2x2 - 6)?
A)
x4
ao
XA - x²-3
7x4 - x2 - 9

x^4

Step-by-step explanation:

(4x^4 + 2x^2 - 6)- (3x^4 + 2x^2 - 6)

Distribute the minus sign

(4x^4 + 2x^2 - 6)- 3x^4 - 2x^2 + 6

4x^4 - 3x^4+ 2x^2- 2x^2 - 6+6

x^4

step-by-step explanation: a reaction is first order. if the initial reactant concentration is 0.0200 m, and 25.0 days later the concentration is 6.25 x 10-4 m, then its half-life is: