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Volgvan
4 years ago
7

Whats is the product? (3x+y)(x2+2y+4

Mathematics
2 answers:
ipn [44]4 years ago
6 0

Answer:

3x^{2}+2xy+6xy+12x+4y

Step-by-step explanation:

(3x+y)(x2+2y+4=+2xy+6xy+12x+4y

Irina-Kira [14]4 years ago
3 0
45x58291x583727157372
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How do you solve linear equations with substitutions?
Nostrana [21]

Answer:

The method of solving "by substitution" works by solving one of the equations (you choose which one) for one of the variables (you choose which one), and then plugging this back into the other equation, "substituting" for the chosen variable and solving for the other. Then you back-solve for the first variable.

Step-by-step explanation:

Solve the following system by substitution.

2x – 3y = –2

4x +   y = 24

The idea here is to solve one of the equations for one of the variables, and plug this into the other equation. It does not matter which equation or which variable you pick. There is no right or wrong choice; the answer will be the same, regardless. But — some choices may be better than others.

For instance, in this case, can you see that it would probably be simplest to solve the second equation for "y =", since there is already a y floating around loose in the middle there? I could solve the first equation for either variable, but I'd get fractions, and solving the second equation for x would also give me fractions. It wouldn't be "wrong" to make a different choice, but it would probably be more difficult. Being lazy, I'll solve the second equation for y:

4x + y = 24

y = –4x + 24

Now I'll plug this in ("substitute it") for "y" in the first equation, and solve for x:

2x – 3(–4x + 24) = –2

2x + 12x – 72 = –2

14x = 70

x = 5

5 0
3 years ago
Describe the scale of the graph.
Volgvan
Some of those numbers are negative and some of the other numbers aren’t negative
4 0
3 years ago
What is the result of subtracting the second equation from the first? 5x-y=6 and -2x+y=8
Travka [436]

Answer:

Solve for the first variable in one of the equations, then substitute the result into the other equation.

Point Form:

(2,−4)

Equation Form: x= 2, y = −4

Step-by-step explanation:

I did the math

4 0
3 years ago
Rectangle ABCDABCDA, B, C, D is graphed in the coordinate plane. The following are the vertices of the rectangle: A(-8, 3)A(−8,3
Andru [333]

9514 1404 393

Answer:

  15 squre units

Step-by-step explanation:

The area of the rectangle is the product of its length and width. The length is AB = 5 units; the width is BC = 3 units. Then the area is ...

  A = LW

  A = (5 units)(3 units) = 15 units²

The area of rectangle ABCD is 15 square units.

6 0
3 years ago
Suppose translating quadrilateral ABCD by 8 units to the left and 8 units down results in a new quadrilateral A'B'C'D'. Which st
madam [21]

Answer:

Step-by-step explanation:

hope this helped

6 0
3 years ago
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