Pls help fast!!
1. factorize(l-x²)
2. simplify:9³×125×27×t⁻⁴/3⁻²×4⁴×5³×(t ⁻⁴)³

Find dy/dx using implicit differentiation ln(20+e^xy)=y

Assume that 1400 births are randomly selected and 1378 of the births are girls. use subjective judgment to describe the number of girls as significantly high, significantly low, or neither significantly low nor significantly high. choose the correct answer below. a. the number of girls is neither significantly low nor significantly high. b. the number of girls is significantly high. c. the number of girls is significantly low. d. it is impossible to make a judgment with the given information.

Mickey needs to cut pieces of ribbon that are each 1 meter long tie onto balloons. if he has 8 pieces of ribbon that are each 1 dekameter long. how many 1 meter pieces of ribbon can he cut