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Alex73 [517]
3 years ago
5

(Please help!) Solve the following system by substitution: Y=x^2+4x+6 Y= -x+2 Thank you!

Mathematics
2 answers:
hoa [83]3 years ago
4 0
-x+2=x^2+4x+6
x^2+5x+4=0
(x+4)(x+1)=0
X= -4 and -1
Ahat [919]3 years ago
3 0
X is  -4 and -1

hope this helps you(:

If not plz let me know(:
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20 points! Simplify: 2y(2y+3yx^{2} )-y^{2} (3-y) please show work!
arlik [135]

Answer:

8x2y - 6x2 - 8xy2 - y2

Step-by-step explanation:

Equation at the end of step  1  :

 (((((5•(x2))•y)-(5•(x2)))+(3y•(x2)))-(3•(y2)))-((((x2)+(y2))+(8x•(y2)))-3y2)

Step  2  :

Equation at the end of step  2  :

 (((((5•(x2))•y)-(5•(x2)))+(3y•(x2)))-(3•(y2)))-((((x2)+(y2))+23xy2)-3y2)

Step  3  :

Equation at the end of step  3  :

 (((((5•(x2))•y)-(5•(x2)))+(3y•(x2)))-3y2)-(x2+8xy2-2y2)

Step  4  :

Equation at the end of step  4  :

 (((((5•(x2))•y)-(5•(x2)))+3x2y)-3y2)-(x2+8xy2-2y2)

Step  5  :

Equation at the end of step  5  :

 (((((5•(x2))•y)-5x2)+3x2y)-3y2)-(x2+8xy2-2y2)

Step  6  :

Equation at the end of step  6  :

 ((((5x2•y)-5x2)+3x2y)-3y2)-(x2+8xy2-2y2)

Step  7  :

Final result :

 8x2y - 6x2 - 8xy2 - y2

4 0
3 years ago
A regular pentagon with side length s has perimeter 5s. Dakota built a dog pen in her backyard for her dog's new puppies. The pe
sashaice [31]
The answer is 243 hope this helps
4 0
3 years ago
1/4 to the power of 7 times 1/4 to the power of -4
elena55 [62]

Answer:

0.015625

Step-by-step explanation:

the answer is 0.015625

6 0
3 years ago
Read 2 more answers
Solve for t -7/4 =2/5t
Fittoniya [83]

Answer:

t = 35/12

Step-by-step explanation:

t - 7/4 = 2/5 t

t = 2/5 t + 7/4

t - 2/5 t = 7/4

t*(1-2/5) = 7/4

t*3/5 = 7/4

t = (7/4)/(3/5)

t = 7*5/4*3

t = 35/12

6 0
3 years ago
Select all the expressions that are equivalent to 4^-3
xenn [34]

Answer:

1/64, 2/128

Step-by-step explanation:

4 -³

= 1/4³

= 1/(4×4×4)

= 1/64

We can also multiply the numerator and denominator by 2

(1×2)/(64×2)

= 2/128

I hope this was helpful, please rate as brainliest

8 0
3 years ago
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