Упрости выражение (2а-3)^2-(3а-2)^2 и найди его значение при а= 9. Created by blomfield. matematika-ru

Упрости выражение (2а-3)^2-(3а-2)^2 и найди его значение при а= 9...

blomfield @blomfield

July 2022 1 41 Report

Упрости выражение (2а-3)^2-(3а-2)^2 и найди его значение при а= 9

Answers & Comments

NNNLLL54

Verified answer

Ответ:

$a=9\\\\(2a-3)^2-(3a-2)^2=\\\\=\Big((2a-3)-(3a-2)\Big)\Big((2a-3)+(3a-2)\Big)=\\\\=(2a-3-3a+2)(2a-3+3a-2)=(-a-1)(5a-5)=\\\\=-5(a+1)(a-1)=-5(a^2-1)=-5\cdot (81-1)=5\cdot 80=400$

5 votes Thanks 3

vyberi slovo s chereduyushejsya glasnoj kornyaa zapreshatb bissektrisav poklonit

Answer

blomfield July 2022 | 0 Ответы

predstavte v vide mnogochlena vyrazhenie 405x22 xx2pozhalujsta polnoe resh

Answer

blomfield July 2022 | 0 Ответы

po dannym risunka najdite 2 esli ab i 1590

Answer

blomfield July 2022 | 0 Ответы

na risunke dano svm bolshe avm na 630 najdite ugly treugolnika avs

Answer

blomfield July 2022 | 0 Ответы

srochno dlina perpendikulyara ravna 6 sm a ugol mezhdu naklonnoj i perpendikulyarom

Answer

blomfield July 2022 | 0 Ответы

3 ybefc7ddcc2414f1e11bdc6c2249c0688 10398

Answer

Answers & Comments

Verified answer

reshite uravneniex 43 x2 x 12 40

1 v sosude nahoditsya glicerin 3 v nego nalivayut kerosin 1 a zatem maslo

uprostite vyrazheniya m 824m 4m4 2x 13 2x13

sostav rasskaz o 1 opiumnoj vojne1gody vojny2prichiny vojny3itogi vojny dlya k

vyberi slovo s chereduyushejsya glasnoj kornyaa zapreshatb bissektrisav poklonit

predstavte v vide mnogochlena vyrazhenie 405x22 xx2pozhalujsta polnoe resh

po dannym risunka najdite 2 esli ab i 1590

na risunke dano svm bolshe avm na 630 najdite ugly treugolnika avs

srochno dlina perpendikulyara ravna 6 sm a ugol mezhdu naklonnoj i perpendikulyarom

3 ybefc7ddcc2414f1e11bdc6c2249c0688 10398

рекомендуемые вопросы

Helpful Links

Helpful Social