Question

What is the positive value of x in the following expression?


`2x ^(2) - 7x - 4`
​

Answer 1

x=4

Explanation:

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Answer 2

x = 4

Explanation:

Given

2x² - 7x - 4

To solve for x , equate the expression to zero

2x² - 7x - 4 = 0 ← in standard form

(x - 4)(2x + 1) = 0 ← in factored form

Equate each factor to zero and solve for x

x - 4 = 0 ⇒ x = 4

2x + 1 = 0 ⇒ 2x = - 1 ⇒ x = -
`(1)/(2)`

Thus the positive value of x is x = 4