Question

tìm x biết

0,81:\(\frac{x}{2}\)=\(\frac{16}{x^4}\):(-0,9)

ai làm nhanh,đúng mik tik cho

Answer 1

\(0,81:\frac{x}{2}=\frac{16}{x^4}:\left(-0.9\right)\)

=> \(\frac{81}{100}:\frac{x}{2}=\frac{16}{x^4}:\frac{-9}{10}\)

=> \(\frac{81}{50x}=\frac{160}{-9.x^4}\)

=> \(81.\left(-9\right)x^4=50x.160\)

=> \(-729.x^4=8000.x\)

=> \(x^4:x=8000:\left(-729\right)\)

=> \(x^3=\frac{-8000}{729}\)

=> \(x^3=\frac{-20^3}{9^3}\)

=> \(x^3=\frac{-20}{9}^3\)

=> \(x=\frac{-20}{9}\)

Answer 2

thank you bạn xyz nha