Answer:
64y² - 81
Step-by-step explanation:
(8y +9)(8y - 9)
64y² - 72y + 72y - 81
64y² - 81
Answer:
25 candles.
Step-by-step explanation:
5x - 1x = 100
4x = 100
Divide both sides by 4.
You are then left with x = 25.
3x^2-24x-21 would be your answer
There is another equation to solve it simultaneously