Question

b)-5a2+4ab-2b2 from 5a2+4ab-3b2​

Answer 1

5a² + 4ab - 3b² - ( -5a² + 4ab - 2b²)

5a² + 4ab - 3b² + 5a² - 4ab + 2b²

10a² - b²

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Answer 2

Step-by-step explanation:

Subtracting

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

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

$= 10 {a}^{2} - {b}^{2}$

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