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a fost răspuns

calculeaza in doua moduri:5×(3+2)=,4×(7-2)=,3×(2+6)=,(7-5)×4=

Răspuns :

ANONIM2121
5x(3+2)=5x5=25
5x(3+2)=5x3+5x2+15+10=25
 
4x(7-2)=4x5=20
4x(7-2)=4x7-4x2=28-8=20

3x(2+6)=3x8=24
3x(2+6)=3x2+3x6=6+18=24

(7-5)x4=2x4=8
(7-5)x4=7x4-5x4=28-20=8

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