Help посчитайте $8 frac{2}{3} {x}^{2} - 9ay {}^{2} - 9x {}^{3} \ \ \ 27 {a}^{2}z - 24. 89 {a}^{2} z + 3 frac{1}{5} {y}^{2} - 15 {y}^{2} \ \ \ 3. 12ab + 7 frac{5}{6} {m}^{3} - 4 frac{1}{6} {m}^{3} + 16. 82ab$

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Алгебра

lay-laid-laid

4 year(s) ago

Help посчитайте $8 frac{2}{3} {x}^{2} - 9ay {}^{2} - 9x {}^{3} \ \ \ 27 {a}^{2}z - 24. 89 {a}^{2} z + 3 frac{1}{5} {y}^{2} - 15 {y}^{2} \ \ \ 3. 12ab + 7 frac{5}{6} {m}^{3} - 4 frac{1}{6} {m}^{3} + 16. 82ab$

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Ответ:

1)

$8 frac{2}{3}{x}^{3}- 16a {y}^{2}+ 9a {y}^{2}- 9 {x}^{3}=8frac{2}{3}{x}^{3}- 9 {x}^{3}- 16a {y}^{2}+ 9a {y}^{2}= ( 8frac{2}{3}- 9) {x}^{3}- (16 - 9)a {y}^{2}= ( 8frac{2}{3}- 8 frac{3}{3} ) {x}^{3}- 7a {y}^{2}=-frac{1}{3}{x}^{3}- 7a {y}^{2}$

2)

$27 {a}^{2} z - 24. 89 {a}^{2} z + 3 frac{1}{5}{y}^{2}- 15 {y}^{2}= (27 - 24. 89) {a}^{2} z- (15 - 3 frac{1}{5} ) {y}^{2}= 2. 11 {a}^{2} z - (15 - 3 frac{2}{10} ) {y}^{2}= 2. 11 {a}^{2} z - (15 - 3. 2) {y}^{2}= 2. 11 {z}^{2}- 11. 8 {y}^{2}$

3)

$3. 12ab + 7 frac{5}{6}{m}^{3}- 4 frac{1}{6}{m}^{3}+ 16. 82ab = (3. 12 + 16. 82)ab + (7 frac{5}{6}- 4 frac{1}{6} ) {m}^{3}= 19. 94ab + ((7 +frac{5}{6})- (4 +frac{1}{6} )) {m}^{3}= 19. 94ab + ((7 - 4) + ( frac{5}{6}-frac{1}{6} )) {m}^{3}= 19. 94ab + (3 +frac{4}{6} ) {m}^{3}= 19. 94ab + (3 +frac{2}{3} ) {m}^{3}= 19. 94ab + 3 frac{2}{3}{m}^{3}$

4)

$19. 8 {x}^{2}- 30 frac{1}{9} kt + 31kt - 20 {x}^{2}=- (20 - 19. 8) {x}^{2}+ (31 - 30 frac{1}{9} )kt =- 0. 2 {x}^{2}+ (30 frac{9}{9}- 30 frac{1}{9} )kt =- 0. 2 {x}^{2}+ ((30 - 30) + ( frac{9}{9}-frac{1}{9} ))kt =- 0. 2 {x}^{2}+frac{8}{9} kt$

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Oct 19, 2021

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Help посчитайте $8 frac{2}{3} {x}^{2} - 9ay {}^{2} - 9x {}^{3} \ \ \ 27 {a}^{2}z - 24. 89 {a}^{2} z + 3 frac{1}{5} {y}^{2} - 15 {y}^{2} \ \ \ 3. 12ab + 7 frac{5}{6} {m}^{3} - 4 frac{1}{6} {m}^{3} + 16. 82ab$