Question

calcule as expressões;
alguem me ajudaaaa e avaliativaaa

a. 7·2²-2²·5=

b. √25·(√196-2³)=

c. (2³·3²-6²)÷[18÷(15-3·2²)]²=

d. 2³·3-√6·8-1=

Answer 1

Explicação passo-a-passo:

a)7×2^(2)-2^(2)×5=7×4-4×5=28-20=8

b)V25×(V196-2^(3))=5×(14-8)=5×6=30

c)(2^(3)×3^(2)-6^(2))÷[18÷(3×2^(2))]^(2)=(8×9-36)÷[18÷(15-3×4)]^(2)=(72-36)÷[18÷(15-12)]^(2)=36÷[18÷3]^(2)=36÷6^(2)=36÷36=1

d)2^(3)×3-V6×8-1=8×3-V6×8-1=24-V48-1=24-V47=24- 6.8556546004= 17.1443453996