Question

Between what values of x is the expression 19x -

Q: Answer-Between what values of x is the expression 19x - 2x2 - 35 positive?

So, 19x - 2x2 - 35 0 Or, 2x2 - 19x 35 0 Or, 2x2 - 14x - 5x 35 0 Or, 2xx - 7 - 5x - 7 0 Or, 2x - 5 x - 7 0 So, x 2.5 or x 7 For any value of x 7, the value of expression 2x2 - 19x 35 becomes, positive. So, x lies between 2.5 and 7.

2x2 - 35 positive?

A 2.5 > x > 7

B 2.5 < x < 7

C 2.5 ≤ x ≤ 7

D 2.5 ≥ x ≥ 7

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NABARD GRADE A

Between what values of x is the expression 19x -

Solution

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