What is the value of the expression
x² + 2x - 2xy – 2y + y^2 when x - y = 50 ?

Answers

Answer 1

x ² + 2x - 2xy - 2y + y ² = (x ² - 2xy + y ²) + 2 (x - y)

… = (x - y)² + 2 (x - y)

… = 50² + 2 × 50

… = 2600


Related Questions

true or false
1. The computers of all the five generations have different properties.​

Answers

Answer:

The answer to your question is true

Indeed the answer is true

How do you grow rice

Answers

Answer:

put some rice in a pot

Then mix it up with some sauce

pour in some dirt

and you'll get some sweet plant

Explanation:

Ideally, you need at least 40 continuous days of warm temps over 70 F. (21 C.) to grow rice.

First, you need to find one or several plastic containers without holes. One or several depends upon how many miniature pseudo rice paddies you want to create. Next, either purchase rice seed from a gardening supplier or buy long grain brown rice from a bulk foods store or in a bag. Organically grown rice is best and it can’t be white rice, which has been processed.

Fill the bucket or plastic container with 6 inches (15 cm.) of dirt or potting soil. Add water up to 2 inches (5 cm.) over the soil level. Add a handful of the long grain rice to the bucket. The rice will sink to the dirt. Keep the bucket in a warm, sunny area and move it to a warm place at night.

Rice plants don’t need too much care from here on out. Keep the water level at 2 inches (5 cm.) or so above the dirt. When the rice plants are 5-6 inches (12.5-15 cm.) tall, increase the water depth to 4 inches (10 cm.). Then, allow the water level to lower on its own over a period of time. Ideally, by the time you harvest them, the plants should no longer be in standing water.

If all goes well, rice is ready to harvest in its fourth month. The stalks will go from green to gold to indicate it is time to harvest. Harvesting rice means cutting and gathering the panicles attached to the stalks. To harvest the rice, cut the stalks and allow them to dry, wrapped in a newspaper, for two to three weeks in a warm, dry place.

Once the rice stalks have dried, roast in a very low heat oven (under 200 F./93 C.) for around an hour, then remove the hulls by hand. That’s it; you can now cook with your very own home grown, long grain brown rice.

One of the five reasons young drivers, age 16 to 20 are involved in more
collisions than older drivers is _______
pressure.
A. peer
B. school
C. night

Answers

Answer:

A

Explanation:

because their friends can be drinking in the car and says to the driver will u like to drink and persuading which will lead to him being drunk

Peer pressure because that’s the only word that fits.
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