Question

please answer this questiona​

Answer 1

Answer:

25) x = 8/9 or x = -8/9

26) 81

Step-by-step explanation:

25} if you want to factorise a polynomial with x term missing you can simply equate it with 0.

hence, 81x² - 64 = 0

81x² = 64

x² = 64/81

x = $\sqrt{64/81}$

x = $\sqrt{64}/\sqrt{81}$

x= 8/9 or x = -8/9

26} => (-4)⁴ × (3/4)⁴

=> 256 ˣ 81/256

=> 81