Question

calculati a)5³+2³×5²-8²×5 b) (3×5³+2×5³):5²​

Answer 1

Răspunsurile corecte sunt:

a=5

b=13

Answer 2

a) 5³+2³×5²-8²×5 =

$=125+2^3\times \:5^2-8^2\times \:5$

$=125+8\times \:5^2-8^2\times \:5$

$=125+8\times \:25-8^2\times \:5$

$=125+8\times \:25-64\times \:5$

$=125+200-64\times \:5$

$=125+200-64\times \:5$

$=125+200-320$  =  5

b) (3×5³+2×5³):5²​

$3\times \:5^3+2\times \:5^3$

$=3\times \:125+2\times \:125$

$=3\times \:125+2\times \:125$

$=375+250$ = 625

$=625\div \:25$ = 25

Sper că te-am ajutat!

Succes!