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10 la puterea a 2 a (4+5×3la a2-2la a5+4la a 3-(49-3la a2)÷2la a3)

Răspuns :

10²[4+5×3²-2^5+4³-(49-3²):2³]
=100[4+5×9-32+64-(49-9):8]
=100(4+45-32+64-40:8)
=100(4+45-32+64-5)
=100×77
=770