Question

What should be the value of p if the value of 3x2 + 4x – p is 5, when (a) x=-1, (b) x =1​

Answer 1

Answer:

Step-by-step explanation:

(a) When x = -1,

3(-1)² +  4(-1) - p = 5

3(1) - 4 - p = 5

3 - 4 - p = 5

p = 3 - 4 - 5

p = -6

(b) when x = 1,

3(1)² + 4(1) - p = 5

3 + 4 - p = 5

p = 3 + 4 - 5

p = 2