Question

maths
mark question has to be done

Answer 1

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Answer 2

Answer:

x = √2 or x = - 4/ 7√2

Step-by-step explanation:

7√2 x² - 10 x - 4√2 = 0

Factorize the given quadratic equation by splitting the middle term

7√2 x² - 10 x - 4√2 = 0

7√2 x² - 14 x + 4 x - 4√2 = 0

7√2 x ( x  - √2 ) + 4 (x  - √2 ) = 0

( 7√2 x + 4) (x - √2) = 0

Only when ( 7√2 x + 4)  = 0 or (x - √2) = 0

7√2 x + 4 = 0

x = - 4/ 7√2

x - √2 = 0

x = √2