Math, asked by suravigupta141, 3 months ago

If p = -10, find the value of-
p² - 2 (p - 15) - 100

Answers

Answered by OSH10
0

Answer:

50

Use Sci-Cal

Answered by spacelover123
5

Given

  • p = -10

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To Find

  • p² - 2 (p - 15) - 100

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Solution

Method 1 - Simplify the equation and then substitute value of 'p' and solve.

⇒ p² - 2 (p - 15) - 100

⇒ p² - 2 (p) - 2 (-15) - 100

⇒ p² - 2p + 30 - 100

⇒ p² - 2p - 70

Now substitue 'p' with '-10'

⇒ (-10)² - 2 (-10) - 70

⇒ 100 + 20 - 70

⇒ 120 - 70

⇒ 50

Method 2 - Substitute the value of 'p' and solve.

⇒ p² - 2 (p - 15) - 100

⇒ (-10)² - 2 (-10 - 15) - 100

⇒ 100 - 2 (-25) - 100

⇒ 100 + 50 - 100

⇒ 150 - 100

⇒ 50

∴ p² - 2 (p - 15) - 100  = 50 if 'p' = -10

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