Chứng minh rằng hiệu các bình phương của 2 số chẵn liên tiếp thì chia hết cho 4

Mng giải giúp e câu này với ạaa, vẽ hình luôn giúp e

Giải giúp mình với ạ. Giải theo cách tự luận nha. Mình cảm ơn

Giải hộ mình bài 2 với ạ.Nhanh lên ạ

vẽ anime / đậu mầm /..... vui vẻ Nl : ông ba bị là gì hả các pác

bai 1 : A= x+2/x+3 - 5/x^2+x-6 + 1/2-x a, rut gon A b, tim x , de A = -3/4 c, tim GTBT A khi x^2 - 9 = 0 bai 2: E = ( x/ x+2 - x^3 - 8/x^3+8 . x^2 - 2x + 4/ x^2 - 4) : (1/2+x) a,rut gon E b,tim x de E>0 c, tim x thuoc Z de E thuoc Z 5 * va ctlhn

giup mk vs chieu ny 3h 30 nop rui Cho $\frac{a}{b}$ =$\frac{b}{c}$= $\frac{c}{d}$ (a,b,c,d $\neq$ 0) C/M: a=b=c

Giúp em bài 3 phần 3 ạ Đăng lần thứ 2 rồi đó

hôm nay tốn hơi nhiều điểm vào môn toán :(( cần gấp

Fill in the blank with a suitable word GROWING PAINS The teenage years are often a challenging and difficult time for parents, presenting them with the problem of how to maintain their children's respect and obedience, but at the (1) …………………… time, allow their independence to increase. It's quite normal (2) ……………………children to be disobedient in some way, as they too probably find it an awkward and confusing time. Generally, it's best to treat defiance calmly though, unless it's causing serious (3) …………………… at home or school. Two things that parents should try to avoid doing (4) ……………………their teenagers are, firstly to become much (5) …………………… strict, and secondly, to try to be 'one of the kids'. Both these things (6) ……………………only create bigger divisions and differences. The key lies (7) …………………… keeping up good levels of communication on (8) …………………… sides. Parents need to learn (9) …………………… to let their teenager know (10) ……………………they disapprove of something, (11) …………………… being so critical or negative that their child feels ignored or pushed away. (12) ……………………angry or sarcastic rarely works; it only invites more of the same kind of behaviour from the child.