Question

Calculeaza:
5•{5•[5•(5 la puterea 2 - 3 la puterea 2)-4 la puterea 2]-15 la puterea 2}:19-5 la puterea 2

Answer 1

5x{5x[5x(5²-3²)-4²]-15²}:19-5²=
=5x{5x[5x(25-9)-4²]-15²}:19-5²
=5x{5x[5x16-16]-15²}:19-5²
=5x{5x[4x16]-15²}:19-5²
=5x{5x64-15²}:19-5²
=5x{320-225}:19-5²
=5x95:19-5²
=5x5-5²
=5²-5²
=0




Sper ca te-am ajutat ! :)

Answer 2

5{5[5(25-9)-16]-225}:19-25=
5[5(5×16-16)-225]:19-25=
5[5(16×4)-225]:19-25=
5(320-225):19-25=
5×95:19-25=
5×5-25=
25-25=
0