Question

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

Answer 1

Answer:

78

Step-by-step explanation:

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

= 12 ( -3 )^2 - 30

 = 12 (9) - 30 = 78

Answer 2

Answer:

78

Step-by-step explanation:

Expression:

• 6(2x² - 5)

Evaluate x = 3 according to the question:

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

Solve this problem, applying PEMDAS.

• $6 \{2( - 3 \times - 3) - 5 \}$
• $6 \{2(9) - 5 \}$
• $6 \{18 - 5 \}$
• $6 \{13 \}$
• $78$

Hence,the answer to the given expression is 78.

-Regards,Hannah :)