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Question

a  2 mũ 2 x 3 mũ 2 - 5x2x3 b 5 mũ 2 x 2  +20  : 2 mũ 2 c 7 mũ 2 x15 - 5x 7 mũ 2 d 3 x 5 mũ 2 + 15 x 2 mũ 2 - 1 mũ 2 x 3

Hquynh · Accepted Answer

$a,=4.9-30\=36-30\
=6\
b,=25.2+20:4\
=50+5\
=55\
c,=49.15-5.49\
=49\left(15-5\right)\
=49.10=490\
d,=3.25+15.4-1.3\
=75+60-3\
=132$Câu trả lời: $a,=4.9-30\=36-30\
=6\
b,=25.2+20:4\
=50+5\
=55\
c,=49.15-5.49\
=49\left(15-5\right)\
=49.10=490\
d,=3.25+15.4-1.3\
=75+60-3\
=132$

Bùi Phan Thảo Ly · Answer

$a,2^2.3^2-5.2.3=4.9-5.2.3=36-30=6$$b,5^2.2+20:2^2=25.2+20:4=50+5=55$$c,7^2.15-5.7^2=49.15-5.49=49.\left(15-5\right)=49.10=490$$d,3.5^2+15.2^2-1^2.3=3.25+15.4-3=75+60-1=134$Câu trả lời: $a,2^2.3^2-5.2.3=4.9-5.2.3=36-30=6$$b,5^2.2+20:2^2=25.2+20:4=50+5=55$$c,7^2.15-5.7^2=49.15-5.49=49.\left(15-5\right)=49.10=490$$d,3.5^2+15.2^2-1^2.3=3.25+15.4-3=75+60-1=134$

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