3 years ago

Simplify the expression. Use standard polynomial format. x(2x + 3) + (x - 3)(x - 4)

Mathematics

1 answer:

timofeeve [1]3 years ago

5 0

Answer:

x(2x + 3) + (x - 3) (x - 4) = 3x²- 4x + 12

Step-by-step explanation:

Expand:

x(2x + 3): 2x² + 3x

2x² + 3x + (x - 3) (x - 4)

Expand:

(x - 3) (x - 4): x²- 7x + 12

2x² + 3x + x²- 7x + 12

Simplify:

2x² + 3x + x² - 7x + 12: 3x² - 4x + 12

= 3x² - 4x +12

You might be interested in

Dividing a whole number by a unit fraction results in a:

Alex Ar [27]

Answer:

each unit being divided into smaller parts

Step-by-step explanation:

7 0

3 years ago

8. A salesman bought a computer from a manufacturer. The salesman the sold the computer

PolarNik [594]

Answer:

117,000

Step-by-step explanation:

156000÷100x25

=39000

Then

156000-39000

=$117,000

8 0

3 years ago

Mr. Pham wrote the equation below on the board.

Margaret [11]

Answer:

x=5.5

Step-by-step explanation:

We can solve this equation by using the various properties and PEMDAS.

First, we would want to subtract 18 on both sides, to even out the equation.

The result is -7x=-38.5

Now we can isolate the x by dividing both sides by -7.

-38/-7=5.5

Thus, x=5.5

Hope this helps!

7 0

3 years ago

Read 2 more answers

What is the slope and y-intercept from the table?

elixir [45]

Add, then subtract and that’s your answer!

6 0

3 years ago

A, B & C lie on a straight line. BD = CD. ∠ BCD = 70° and ∠ BAD = 10°. Work out x

trapecia [35]

Answer:

x= 100

Step-by-step explanation:

straight line = 180⁰

180-(70+10)= 100

5 0

3 years ago