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AlexFokin [52]
3 years ago
10

NEED AS SOON AS POSSIBLE

Mathematics
1 answer:
ss7ja [257]3 years ago
5 0
This is 16+85 i know it is becaout
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-(2x+12) (9x^2+4x-9) <br><br><br>please show all work!
Bess [88]

Answer:

108 - 30x - 116x² - 18x³

Step-by-step explanation:

We have to get the value of - (2x + 12) (9x² + 4x - 9)

Now, using the distributive property of multiplication we get

- (2x + 12) (9x² + 4x - 9)

= -[2x (9x² + 4x - 9) + 12 (9x² + 4x - 9)]

= -[(18x³ + 8x² - 18x) + (108x² + 48x - 108)]

= -[18x³ + 116x² + 30x - 108]

= 108 - 30x - 116x² - 18x³ (Answer)

5 0
3 years ago
2x + 3y =12<br> Complete the missing value in the solution to the equation<br> (blank, 8)
blondinia [14]

Answer:

(-6, 8)

Step-by-step explanation:

2x + 3(8)= 12

2x + 24 = 12

      -24    -24   (subtract 24 from both sides)

2x = -12

x= -6

8 0
3 years ago
I NEED HELP PLEASE!!
RUDIKE [14]

Answer:

D, -79, plz brainliestt

Step-by-step explanation:

-8(2) -3 = -16-3= -19

-19(4) -3 = -76-3 = -79

5 0
2 years ago
Read 2 more answers
Completing the Square: results in 2 solutions<br> x^2 + 3x = -2
mr Goodwill [35]
Add 2 to both sdies
now if we can facor, then if
xy=0 then x and/or y=0
note:xy=x times y and x(y) =x times y

x^2+3x+2=0
what 2 number multiply to get 2 and add to get 3
the numbers are 2 and 1
(x+2)(x+1)=0
set them to zero
x+2=0
subtract 2
x=-2


x+1=0
subtract 1
x=-1



x could be -1 or -2
x=-2, or -1
4 0
2 years ago
William has a lemonade stand. Today he made $17.55 in lemonade sales and one third that amount in cookie sales. How much money d
ira [324]
All together he made 23.40
One third of $17.55 is $5.85
When you add $17.55 and $5.85 together you get $23.40
4 0
3 years ago
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