3 years ago

(2x + 1)2 − 4x(x − 1) = 7

1 answer:

8 0

Answer:

$(2x + 1)^{2} - 4x(x - 1) = 7 \\ (2x + 1)(2x + 1) - 4 {x}^{2} + 4x = 7 \\ 4 {x}^{2} + 4x + 1 - 4 {x}^{2} + 4x = 7 \\ 8x + 1 = 7 \\ 8x = 7 - 1 \\ 8x = 6 \\ \\ x = \frac{6}{8} \\ \\ x = \frac{3}{4} \\ \\ x = 0.75$

You might be interested in

If 1 yard = 3 feet and 1 mile = 5.280 feet how many yards are there in 2 miles .

kaheart [24]

Answer:

3520

Step-by-step explanation:

Because 3 feet are equal to a yard and 1760 yards are in one mile

So.. just add 1760+1760 and thats the equivalent of 2 miles

7 0

2 years ago

Help meh here...what’s 27 and 29

Alex73 [517]

27. -24 is the answer
29. -18 is the answer

5 0

3 years ago

Find the range of f(x)=2/5x + 5 for the domain (-4, -2, 0 3)

vaieri [72.5K]

Answer:

Your answers are correct

Step-by-step explanation:

5 0

3 years ago

Which choice shows the coordinates of C' if the trapezoid is reflected across the y-axis?

vivado [14]

Answer:

(-5, 3)

Step-by-step explanation:

5 0

3 years ago

Alexey is baking 2 batches of cookies. Since he tends to be quite forgetful, there's a good chance he might burn

bonufazy [111]

Answer:

Funny story actually, i actually was making cookies at my house once and i put the cookie dough in the microwave for two minutes which resulted in the plate exploding: that was my mothers plate that she cared about alot. I threw the shattered plate in a garbage bag and i was originally planning on burying it but if i did that then my dog would have found it and ate it but unfortunately enough i disposed of it and my found out about like a month later.

Step-by-step explanation:

4 0

2 years ago