Question

factorise (a^4-a^13)​

Answer 1

Please help:A copper wire has a diameter of 0.5 mm and resistivity of 1.6 into 10 to the power minus 8 ohm metre what will be length of wire make resistance 12 ohm?how much will resistance if diameter is half

Answer 2

Answer:

Step-by-step explanation:

(a⁴-a¹³)

a⁴(1-a⁹)

a⁴((1)³-(a³)³)

a⁴((1-a)((1)²+1*a+(a)²)

a⁴(1-a)(1+a+a²)