Question

Please solve it ....I will mark it brainlist.

Answer 1

x = 4 - √15

x^² = 16 + 15 - 8√15 = 31 - 8√15

1/x² = 1/31 - 8√15 = (31+8√15) / 961-960 = 31+8√15

x² + 1/x² = 62

THEREFORE, x^4+1/x^4 =(62)^2 =3844

MARK BRAINLIEST

Answer 2

Answer:

Step-by-step explanation:1 step let 50 = x and 25 = 4x

2 step 30 rs = 3000 paise

Now solve it (50x)+25 (4x)=3000