b²+2bc+c²=(b+c)²
(6+(-13))²= (-7)²=49
Объяснение:
b^2+2bc+c^2=(b+c)^2
При b=6 и c= - 13
(6+(-13))^2=(6-13)^2=(-7)^2=49
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b²+2bc+c²=(b+c)²
(6+(-13))²= (-7)²=49
b2+2bc+c^2
B=6
C= -4
Объяснение:
b^2+2bc+c^2=(b+c)^2
При b=6 и c= - 13
(6+(-13))^2=(6-13)^2=(-7)^2=49