Сократите дробь 1) а2-4/7а+14 2)в2-в-6/9в+18 3)7+6с-с2/21-3с. Created by liliakhanipova. algebra-ru

21-3с...

liliakhanipova @liliakhanipova

July 2022 1 15 Report

Сократите дробь
1) а2-4/7а+14
2)в2-в-6/9в+18
3)7+6с-с2/21-3с

Answers & Comments

Freakazoid

Verified answer

$\frac{a^2-4}{7a+14} =\frac{(a-2)(a+2)}{7(a+2)}=\frac{a-2}{7}; \\ \frac{b^2-b-6}{9b+18}=\frac{b^2-3b+2b-6}{9(b+2)}=\frac{b(b-2)-3(b+2)}{9(b+2)}=\frac{(b+2)(b-3)}{9(b+2)}=\frac{b-3}{9};\\ \frac{7+6c-c^2}{21-3c}=\frac{7+7c-c-c^2}{3(7-c)}=\frac{(7-c)+c(7-c)}{3(7-c)}=\frac{(7-c)(1+c)}{3(7-c)}=\frac{1-c}{3}$

39 votes Thanks 81

Answers & Comments

Verified answer

danotreugolnik avsugols90grugola70grsd bissektrisanajdite ugly treugolnika

razlozhite na mnozhiteli kvadratnyj trehchlen 5h2 5h 10 4h2 144

pomogite pozhalujsta v treugolnike avs avltvsltasnajdite uglyavs esli

pomogite proshudanotreugolnik avsugols90grugola70grsd bissektrisanajdite ugly

perevedite pozhalujstathe americans will do london in the afternoonthey dont li

pomogite pliz ochen nado v treugolnike avs ugol a 50gradusama ugol v v 12 raz

pomogitev treugolnike avsltc90grav15smsv75smsv

pomogite srochnov treugolnike avslts90grltb60grsv6smav

pomogite pozhalujsta s dvumya zadachamie95c8d2b9899fd5a00245e64dad2b06a 66530

pomogite pozhalujsta2e45f739ae20ae3d6b78f9b647631f0f 15028

рекомендуемые вопросы

Helpful Links

Helpful Social