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9 votes
Does someone mind helping me with this problem? Thank you!

Does someone mind helping me with this problem? Thank you!-example-1
User Rwold
by
8.4k points

2 Answers

3 votes

Answer:

78

Explanation:

= 12 x^2 - 30 put in ' - 3 ' for 'x'

= 12 ( -3 )^2 - 30

= 12 (9) - 30 = 78

User Noam Manos
by
7.3k points
3 votes

Answer:

78

Explanation:

Expression:

  • 6(2x² - 5)

Evaluate x = 3 according to the question:


6 \{2 (- 3) {}^(2) - 5) \}

Solve this problem, applying PEMDAS.


  • 6 \{2( - 3 * - 3) - 5 \}

  • 6 \{2(9) - 5 \}

  • 6 \{18 - 5 \}

  • 6 \{13 \}

  • 78

Hence,the answer to the given expression is 78.

-Regards,Hannah :)

User Iluxa
by
8.1k points

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