Math, asked by vinayy12345, 1 month ago

2. Add the following algebraic expressions. a) (a² + 4ab - b²) and (-5a² + ab - 3b²) b) (6y²z- 5y² + 12) and ( 4y²z - 3yz -9) c) (x³ - 4x² + 1/2x + 5), ( 2/3x² - 1/3x + 4/5) and ( -1/3x² + x + 5/2) ​

Answers

Answered by Anonymous
5

\huge\sf\red{Answer:-}

a) (a² + 4ab - b²) and (-5a² + ab - 3b²)

⇒ (a² + 4ab - b²) + (-5a² + ab - 3b²)

⇒ a² + 4ab - b² - 5a² + ab - 3b²

⇒ -4a² + 5ab - 4b²

b) (6y²z- 5y² + 12) and ( 4y²z - 3yz -9)

⇒ (6y²z - 5y² + 12) + (4y²z - 3yz -9)

⇒ 6y²z - 5y² + 12 + 4y²z - 3yz - 9

⇒ 10y²z + 5y² - 3yz + 3

c) (x³ - 4x² + 1/2x + 5), ( 2/3x² - 1/3x + 4/5) and ( -1/3x² + x + 5/2)

⇒ (x³ - 4x² + 1/2x + 5) + (2/3x² - 1/3x + 4/5) + ( -1/3x² + x + 5/2)

⇒ (x³ - 4x² + 1/2x + 5 + 2/3x² - 1/3x + 4/5 - 1/3x² + x + 5/2)

⇒ x³ + (-4 + 2/3 - 1/3)x² + (1/2 - 1/3 + 1)x + (5 + 4/5 + 5/2)

⇒ x³ - 11/3x² + 63/10

Answered by IIMrVelvetII
50

\fbox{\huge\pink{A}\blue{N}\purple{S}\green{W}\red{E}\orange{R}}

QUESTION :- Add the following algebraic expressions :-

a} (a² + 4ab - b²) and (-5a² + ab - 3b²)

(a^{2} + 4ab - b^{2}) + (-5a^{2} + ab - 3b^{2})

a^{2} + 4ab - b^{2} - 5a^{2} + ab - 3b^{2}

-4a^{2} + 5ab - 4b^{2}

b} (6y²z - 5y² + 12) and (4y²z - 3yz -9)

(6y^{2}z - 5y^{2} + 12) + (4y^{2}z - 3yz -9)

6y^{2}z - 5y^{2} + 12 + 4y^{2}z - 3yz - 9

10y^{2}z + 5y^{2} - 3yz + 3

c} (x³ - 4x² + 1/2x + 5), ( 2/3x² - 1/3x + 4/5) and ( -1/3x² + x + 5/2)

(x^{3} - 4x^{2} + \frac{1}{2x} + 5) + (\frac{2}{3x^{2}}- \frac{1}{3x} + \frac{4}{5}) + (\frac{-1}{3x^{2}} + x + \frac{5}{2})

(x^{3} - 4x^{2} + \frac{1}{2x} + 5 + \frac{2}{3x^{2}} - \frac{1}{3x} + \frac{4}{5} - \frac{1}{3x^{2}} + x + \frac{5}{2})

x^{2} + (-4 + \frac{2}{3}- \frac{1}{3})x^{2}+ (\frac{1}{2} - \frac{1}{3} + 1)x + (5 + \frac{4}{5} + \frac{5}{2})

x^{2} - \frac{11}{3x}^{2} + \frac{63}{10}

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