The number of gallons of water in a tank at an aquarium is equal to 8 to the power of 3. how many gallons of water are in the tank?
512 gallons of water
8 to the power of 3 simply means 8 times 8 times 8.
hoped it .
you went wrong on the 4th line while expanding the parentheses.
(x^2 + 2x)(x^2 + 2x) - 4
= x^4 + 2x^3 + 2x^3 + 4x^2 - 4
= x^4 + 4x^3 + 4x^2 - 4. (answer).
750 (have) - 400 (game system) = 350 (left to spend)
divide 350 by 49 and get 7 games
you could also round 49 up to 50 to simplify the division.