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pychu [463]
3 years ago
7

2+ (-3)^2 - (-1) please explain! :3

Mathematics
2 answers:
Ugo [173]3 years ago
6 0

Answer:

12

Step-by-step explanation:

Hello!

First of all you have to understand the order of operations.

PEMDAS

Parenthesis, Exponent, Multiplication/Divison, Addition, Subtraction.

From this you can see that we first have to deal with the exponent, then multiplication, then the addition.

So we get 2+9-(-1)

The 9 is from -3^2

2+9+1

11+1

12.

Hope this helps!

NeTakaya3 years ago
6 0
Hopes this helps:

Answer: 12

Hope you have a great day.
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3 years ago
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aleksley [76]

Answer:

f(x)=-2x^2-3x-9

Step-by-step explanation:

Let f(x)=ax^2+bx+c be the quadratic function.

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Similarly, f(1)=-5\implies a(1)^2+b(1)+c=-5\implies a+b=-5....(2)

and f(2)=-23\implies a(2)^2+b(2)+c=-23\implies 4a+2b+c=-23...(3)

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Put (4) into (1) to get:

4(-b-5)-2b+c=-11\implies -6b+c=9....(5)

Put (4) in (3) to get:

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3 0
4 years ago
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Answer:

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Step-by-step explanation:

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Finger [1]

Answer:

The answer to your question is below

Step-by-step explanation:

9)

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10)

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