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3 years ago

10

What is 4x(1+8x) Distributed

1 answer:

MA_775_DIABLO [31]3 years ago

4 0

Answer:

4x + 32x²

Step-by-step explanation:

4x(1 + 8x) ← multiply each term in the parenthesis by 4x

= 4x + 32x²

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The dog barked 6 times

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3 years ago

System of Equations <br> Need help<br> Trig

Yanka [14]

Looks like the system is

$\begin{cases}-2x+y+6z=1\\3x+2y+5z=16\\7x+3y-4z=11\end{cases}$

We can eliminate $y$ by taking

$(3x+2y+5z)-2(-2x+y+6z)=16-2(1)$

$\implies3x+2y+5z+4x-2y-12z=16-2$

$\implies7x-7z=14$

$\implies x-z=2$

so that $z=x-2$ , and

$(7x+3y-4z)-3(-2x+y+6z)=11-3(1)$

$\implies7x+3y-4z+6x-3y-18z=11-3$

$\implies13x-22z=8$

Substitute $z=x-2$ into this last equation and solve for $x$ :

$13x-22(x-2)=8$

$\implies13x-22x+44=8$

$\implies-9x=-36$

$\implies x=4$

Then

$z=x-2$

$\implies z=4-2$

$\implies z=2$

Plug these values into any one of the original equation to solve for $y$ :

$-2x+y+6z=1$

$\implies-2(4)+y+6(2)=1$

$\implies-8+y+12=1$

$\implies y=-3$

Hence the solution is x = 4, y = -3, and z = 2.

6 0

4 years ago

34 + 10 + 100 = 12 x 12 Is this correct?

Harrizon [31]

Answer:ig so

Step-by-step explanation:34+10+100=144

12x12=144 same thing

4 0

3 years ago

Read 2 more answers

7p2-3-3p3 in standard form

Mekhanik [1.2K]

Answer:

-3p^3+7p^2-3

Step-by-step explanation:

7 0

3 years ago

If x^2 - 6x +8=0, then x-4=0 or x-2=0.

Dimas [21]

Step-by-step explanation:

X - 4 = 0

X = 4

X - 2 = 0

X = 2

So the values of x are 2 and 4

4 0

3 years ago