Question

помогите пожалуйста даю 14 балов

Answer 1

$5 {}^{x {}^{2} + x - 5 } = frac{1}{125} \ 5 {}^{x {}^{2} + x - 5 } = 5 {}^{ - 3} \ x {}^{2} + x - 5 = - 3 \ x {}^{2} + x - 2 = 0 \ d = 1 - 4( - 2) = 1 + 8 = 9 \ x1 = frac{ - 1 + sqrt{9} }{2} = frac{2}{2} = 1 \ x2 = frac{ - 1 - sqrt{9} }{2} = frac{ - 4}{2} = - 2$