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Evaluate −x2 − 4x − 4 for x = −3

User Nodots
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2 Answers

5 votes

Final answer:

To find the value of the expression −x2 − 4x − 4 for x = −3, substitute −3 into the expression and simplify to get −5.

Step-by-step explanation:

To evaluate the expression −x2 − 4x − 4 for x = −3, we substitute −3 for x in the expression and simplify.

First, substitute x with −3: −(−3)2 − 4(−3) − 4.

Simplify the square of −3: −(9) − 4(−3) − 4.

Multiply 4 by −3: −(9) + 12 − 4.

Finally, add and subtract the numbers: −9 + 12 − 4 = −1 − 4 = −5.

So, evaluating the expression for x = −3 gives us −5.

User Ysakhno
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1 vote

-x2 - 4xfor - 4x + 3 =

-1 • (x2 + 4xfor + 4x - 3)

-x2 - 4xfor - 4x + 3 = 0

-x2-4xfor-4x+3 = 0

Hope this helps.

User Kazuwal
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6.8k points