Question

What should be the value of 'p' if the value of 3y^2-9y-p equal to 8 when y=-2
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Answer 1

Answer:

The value of p = -14.

Step-by-step explanation:

Given that

3y² - 9y - p = 8

Also, y = 2.

Therefore, substituting 2 in place of y in above equation.

⇒3(2)² - 9(2) - p = 8

⇒ 3(4) - 18 - p = 8

⇒ 12 - 18 - p = 8

⇒ -6 -p = 8

⇒ -6 -8 = p

⇒ p = -14

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Answer 2

Answer:

value of p= 22

Step-by-step explanation:

3y^2 - 9y - p = 8

3(-2)^2 - 9(-2) - p = 8

12 + 18 -8 = p

p= 22