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Andreea068417380
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Aplicind formula (a+b)(a-b)calculati
a)101*99
b)51*49
c)61*59
d)102*98
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Răspuns :

(101+99)(101-99)=200x2=400
(51+49)(51-49)=100x2=200
(61+59)(61-59)=120x2=240
(102+98)(102-98)=200x4=800
a) (101+99)x(101-99)=200x2=400;
b) (51+49)x(51-49)=100x2=200;
c) (61+59)x(61-59)=120x2=240;
d) (102+98)x(102-98)=200x4=800.

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