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Riddler
@Riddler
June 2022
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СРОЧНО ПОМОГИТЕ
помогите решить задания с фото ^_^
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twilight16
A)=
x^2-4-x^2-4=
-
8
x-2 x-2
б)=
(m-n)^2+2*2mn=
m^2-2mn+n^2+4mn=
(m^2++2mn+n^2= (m+n)^2
2mn(m-n) 2mn(m-n) 2mn(m-n) 2mn(m-n)
в) =
(p+3)(p-4)-(p-3)(p+4)=
p^2-4p+3p-12-p^2-4p+3p+12=
-2p
(p-4)(p+4) p^2-16 p^2-16
г) =
7pq+q^2-p^2-7pq
=
q^2-p^2
=
-(p-q)(p+q)
= -
p+q.
pq (p-q) pq(p-q) pq(p-q) pq
0 votes
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twilight16
очень нужен ответ как наилучший, поставьте, заранее спасибо, удачи!!!!!!!!!!
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Answers & Comments
x-2 x-2
б)=(m-n)^2+2*2mn= m^2-2mn+n^2+4mn= (m^2++2mn+n^2= (m+n)^2
2mn(m-n) 2mn(m-n) 2mn(m-n) 2mn(m-n)
в) =(p+3)(p-4)-(p-3)(p+4)= p^2-4p+3p-12-p^2-4p+3p+12= -2p
(p-4)(p+4) p^2-16 p^2-16
г) = 7pq+q^2-p^2-7pq= q^2-p^2=-(p-q)(p+q)= - p+q.
pq (p-q) pq(p-q) pq(p-q) pq