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Aleks [24]
3 years ago
8

3x^2+ 4x + 5 for x = -2

Mathematics
1 answer:
Alexus [3.1K]3 years ago
7 0
The answer is 33
3(-2)^2+4(-2)+5
-6^2+ (-8) + 5
36 + (-8) + 5
28+5
33
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<img src="https://tex.z-dn.net/?f=%5Cleft%28%5Csqrt%7B2%7D%2B1%5Cright%29%5Cleft%285%2B%5Csqrt%7B2%7D%5Cright%29" id="TexFormula
dsp73
<h3>Solution:</h3>

( \sqrt{2}  + 1)(5 +  \sqrt{2}) \\  =  \sqrt{2}  (5 +  \sqrt{2} ) + 1(5 +  \sqrt{2} ) \\  = 5 \sqrt{2}  + 2 + 5 +  \sqrt{2}  \\  = 7 + 6 \sqrt{2}

<h3>Answer:</h3>

7 + 6√2

5 0
3 years ago
Read 2 more answers
A=2x+6xz <br> a=2x+6xz<br> for x
Dennis_Churaev [7]
So I guess we are solving for x here :)
So here is my work...
a=2x+6xz
Basically I think it would be
a=6xz+2x

WAIT WAIT NO I'M WRONG FORGIVE ME!

It's  x=a/2(1+3z)
5 0
3 years ago
Read 2 more answers
13 mins left oh gees oh gosh
gavmur [86]

Answer:

I think that it is a quadratic

7 0
3 years ago
Can somebody help me with this, please?
babunello [35]

Answer:

2/3x

Step-by-step explanation:

This is a simple ax graph. all we need is the slope. the slope is the amount the y goes divided by the amount the x goes. essentially

change in y / change in x

2/3

2/3x

4 0
3 years ago
Read 2 more answers
How do you solve x+6/11=10/11
laiz [17]

Answer:

Step-by-step explanation:

x+6/11=10/11

This is a linear equation, because x has no power, so it will be solved by making x the subject of the equation.

Make x the subject

x+6/11=10/11

x=-6/11+10/11

x=10/11-6/11

Since both fractions have the same denominator, the LCM remains 11

x=(10-6)/11

x=4/11

To check if the answer is correct, we substitute x for 4/11 in the equation. And both sides of the equation must be equal

x+6/11=10/11

4/11+6/11=10/11

(4+6)/11=10/11

10/11=10/11

7 0
3 years ago
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