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Gennadij [26K]
3 years ago
7

Factor the polynomial x(3x+5)-4(3x+5)

Mathematics
2 answers:
mojhsa [17]3 years ago
4 0

Answer:

(3x+5)(x-4)

Step-by-step explanation:

First, we must distribute this:

x(3x+5)-4(3x+5)\\3x^2+5x-12x-20\\3x^2-7x-20

Now, we must factor:

3x^2-7x-20\\(3x+5)(x-4)

padilas [110]3 years ago
3 0
<span>x(3x+5)-4(3x+5)
3x^2+5x-12x+20
3x^2-7x+20</span>
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Please help! Thanks :)
Diano4ka-milaya [45]

Answer:

I'd say your awnser, C.) was correct

Step-by-step explanation:

7.92*10.21=80.8632 which is somewhat equal to 80, which has nothing to do with the number 808. Therefire, the awnser is correct.


3 0
3 years ago
What is 5(-3.4k-7)+(3k+12)=
Ket [755]
5*( -3.4k ) + 5*( - 7 ) + 3k + 12 = - 17k + 3k - 35 + 12 = -14k - 23 ;
4 0
3 years ago
How many solutions does the following system have? <br><br> 2x+3y=1; -3x-2y=-1
zysi [14]

Answer:

x = 1/5 , y = 1/5

Step-by-step explanation:

Solve the following system:

{2 x + 3 y = 1 | (equation 1)

-3 x - 2 y = -1 | (equation 2)

Swap equation 1 with equation 2:

{-(3 x) - 2 y = -1 | (equation 1)

2 x + 3 y = 1 | (equation 2)

Add 2/3 × (equation 1) to equation 2:

{-(3 x) - 2 y = -1 | (equation 1)

0 x+(5 y)/3 = 1/3 | (equation 2)

Multiply equation 1 by -1:

{3 x + 2 y = 1 | (equation 1)

0 x+(5 y)/3 = 1/3 | (equation 2)

Multiply equation 2 by 3:

{3 x + 2 y = 1 | (equation 1)

0 x+5 y = 1 | (equation 2)

Divide equation 2 by 5:

{3 x + 2 y = 1 | (equation 1)

0 x+y = 1/5 | (equation 2)

Subtract 2 × (equation 2) from equation 1:

{3 x+0 y = 3/5 | (equation 1)

0 x+y = 1/5 | (equation 2)

Divide equation 1 by 3:

{x+0 y = 1/5 | (equation 1)

0 x+y = 1/5 | (equation 2)

Collect results:

Answer: {x = 1/5 , y = 1/5

8 0
2 years ago
-4x 25 = 13 solve for x
sammy [17]
- 4x + 25 = 13
4x = 12
x = 3
3 0
3 years ago
13/26 = x/24 solve for x <br> PLEASE ANSWER
EastWind [94]

Answer:

x= 12

Step-by-step explanation:

hope this helps!!

3 0
2 years ago
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