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Solving a Quadratic Equation by Completion of Squares Method

Subtract. 5a...

Question

Subtract.
$5 a^{2} - 7 a b + 5 b^{2}$ from $3 a b - 2 a^{2} - 2 b^{2}$ .

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Solution

$3 a b - 2 a^{2} - 2 b^{2} - (5 a^{2} - 7 a b + 5 b^{2}) 3 a b - 2 a^{2} - 2 b^{2} - 5 a^{2} + 7 a b - 5 b^{2} 10 a b - 7 a^{2} - 7 b^{2}$

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Similar questions

Question 3 (vii)

Subtract:

$5 a^{2} - 7 a b + 5 b^{2} f r o m 3 a b - 2 a^{2} - 2 b^{2}$

5 a^{2} - 7 a b + 5 b^{2}

3 a b - 2 a^{2} - 2 b^{2}

Q. How much does a² − 3ab + 2b² exceed 2a² − 7ab + 9b²?

Q. Subtract:
(i)

- 5 y^{2}

y^{2}

6 x y

- 12 x y

(a - b)

(a + b)

a (b - 5)

b (5 - a)

- m^{2} + 5 m n

4 m^{2} - 3 m n + 8

- x^{2} + 10 x - 5

5 x - 10

5 a^{2} - 7 a b + 5 b^{2}

3 a b - 2 a^{2} - 2 b^{2}

4 p q - 5 q^{2} - 3 p^{2}

5 p^{2} + 3 q^{2} - p q

Subtract:

(i) − 5y²from y²

(ii) 6xy from − 12xy

(iii) (a − b) from (a + b)

(iv) a (b − 5) from b (5 − a)

(v) − m² + 5mn from 4m² − 3mn + 8

(vi) − x² + 10x − 5 from 5x − 10

(vii) 5a² − 7ab + 5b² from 3ab − 2a² −2b²

(viii) 4pq − 5q² − 3p² from 5p² + 3q²− pq

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