Question

a) (3/7+1/2)²

b)(3/4-5/6)²

c)5⁴.20⁴/25⁵.4⁵

d)(-10/3)⁵.(-6/5)⁴

hãy chứng tỏ mình là 1 người thông minh đi ;)

Answer 1

hk bít

Answer 2

huhu giúp mình đi

Answer 3

a) (\(\frac{3}{7}\)+\(\frac{1}{2}\))²=(\(\frac{3}{7}\))²+2x\(\frac{3}{7}\)x\(\frac{1}{2}\)+(\(\frac{1}{2}\))²=\(\frac{9}{49}\)+\(\frac{3}{7}\)+\(\frac{1}{4}\)=169/196

b)(3/4-5/6)²=3/4²-2x3/4x5/6+5/6²=9/16-5/4+25/36=1/144

c)5⁴.20⁴/25⁵.4⁵=625x\(\frac{20x20x20x20}{25x25x25x25x25}\)x1024=625x\(\frac{4x5x4x5x4x5x4x5}{5x5x5x5x5x5x5x5x5x5}\)x1024=625x\(\frac{256}{15625}\)x1024=10485,76

d)(-10/3)⁵.(-6/5)⁴=\(\frac{-100000}{243}\)x\(\frac{-1296}{625}\)=\(\frac{2560}{3}\)

k minh nha 46234444441757315347375714235751374543513757547318541385413537154613578345347515