Bài  6 : Cho a, b, c thỏa mãn .a/2014=b/2015=c/2016

Chứng minh:  4(a - b).(b - c) =\((a-c)^2\)

sorry nha mọi người . mình viết thiếu

Trả lời:

Trạng ngữ 1: từ đây , như đã tìm đúng đường về - trạng ngữ chỉ thời gian, nguyên nhân                   

Trạng ngữ 2:phía đó nơi cuối đường - trạng ngữ chỉ địa điểm , nơi chốn

Hok tốt

Trl :

5-(10-x)=7⇔5-10+x=7⇔x=7-5+10

⇔x=12

Chúc bạn hok tốt !

\(5-\left(10-x\right)=7\)

<=>\(5-10+x=7\)

<=>\(x=7-5+10\)

<=> \(x=12\)

2 .x-1= 16

<=>2x=17

<=>x=8,5

Vậy x=8,5             

không chép mạng nhé viết đi các bạn lâu cũng dc rồi mình cho 3 k luôn

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bình phương trc rồi nhân chia trc cộng trừ sau

c) 3. (–4 )² + 2.(–5) – 20

= 3 . 16 + 2 . (-5) - 20

= 48 + (-10)-20

= 38 - 20

=18

toán 6 mà

=3.16+(-10)-20

=48+(-10)-20

=38-20

=18