Answer:
432
Step-by-step explanation:
Original Equation:
3x^2 + 2x + 5
x = -7
3 multiplied by -7 = -21
Equation:
-21^2 + 2x + 5
-21 multiplied to the second power is 441
(two negatives cancel each other out making the number positive)
Equation:
441 + 2x + 5
2 multiplied by -7 is -14
441 + -14 + 5
441 + -14 = 427
427 + 5 = 432
Answer: 432
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