Question

Simplify:
6(2x²-5) = [?]
X=-3

Answer 1

78

Explanation:

6(2x²-5)=[?]

Given that x = -3.

Plugging in the value:

• 6(2(-3²)-5)

Simplifying using PEMDAS,

• 6(2*9-5)
• 6(18-5)
• (6*18)-(6*30)
• 108 - 30
• 78

6(2x²-5)=[78]

Answer 2

78

Explanation:

6(2x² - 5) = [?] if x = -3

6(2(-3)² - 5)

6(2(9) - 5)

6(18 - 5)

6(13) = 78