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Pavel [41]
3 years ago
5

BRAINLIEST OFFERED! Solve and Show work!! : 2x²-1=x²+4x+11

Mathematics
1 answer:
Musya8 [376]3 years ago
3 0
First we want to put this into standard form.
Subtract (x^2+4x+11) from both sides
x^2-4x-12

Then factor the trinomial
(x-6)(x+2)

Use the zero product property to find roots
(x-6)=0
x=6

(x+2)=0
x=-2

Final answers: x=-2, x=6
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Question 3
hoa [83]

answer is (-7,2)

y = -x -5

y= x+9

Both equations have y on the left hand side

So we equate both equations

We replace -x-5 for  y in the second equation

-x -5 = x+9

Subtract x on both sides

-2x -5 = 9

Now add 5 on both sides

-2x = 14

Divide by -2 from both sides

x = -7

Now plug in -7 for x in the first equation

y = -x -5

y = -(-7)  -5= 7-5 = 2

So answer is (-7,2)

4 0
3 years ago
Read 2 more answers
Solve pls |2c+7|-3&gt;4<br> :(
kotegsom [21]

Answer:

E

Step-by-step explanation:

2c + 7 > 0

2c > -7

c > -7/2

If c < -7/2

-2c -7 -3 > 4

-2c > 14

c < -7

if c > -7/2

2c + 7 -3 >4

2c >0

c >0

4 0
3 years ago
Length=x^2 -8; W= -x+12 <br><br><br> PLEASE HELP!
ASHA 777 [7]
L×W
x^2+8x+12
am not sure
4 0
3 years ago
I need help with this !! chart
Burka [1]

Answer:

Make coordinates with this table.

Step-by-step explanation:

What I think from these tables is that you can make coordinates with these points. Here are the instructions for you to follow-

  1. See the "y" and "x". These are the axis. So make coordinates with these. Ex- (0,3), (1,5) and so on
  2. Plot these coordinates in a graph paper.
  3. After plotting them, you might find the shape it made.

I hope it helps you.

3 0
3 years ago
A number is equal to three times the smaller number also the sum of the smaller number and four is the larger number situation i
emmainna [20.7K]

Answer:

this question is missing needed information

8 0
2 years ago
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