Question

20²-13²:31-24² вычислить

Answer 1

${20 }^{2} - {13}^{2} div 31 - {24}^{2} \ {20}^{2} - frac{169}{? 31} - {24}^{2} \ (20 - 24) times (20 + 24) - frac{169}{31} \ ( - 4) times 44 - frac{169}{31} \ - frac{5625}{31} = - 181 times frac{14}{31}$