Question

For which range of 'p' does the expression 19p - 2p²-

Q: Answer-For which range of 'p' does the expression 19p - 2p²- 35 have a positive value??

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

35 have a positive value??

A 2.5 > p > 7

B 2.5 ≤ p ≤ 7

C 2.5 = p = 7

D 2.5 < p < 7

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For which range of 'p' does the expression 19p - 2p²-

Solution