Scientists Say: Algebra | Science News for Students

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Scientists Say: Algebra | Science News for Students

Algebra (noun, “AL-jeh-brah”)

It is a form of math by which letters and symbols take the place of numbers. By substituting letters for numbers, algebra permits us to take particular equations and make them apply to extra conditions.

For instance, in arithmetic (which is one other form of math), lets say that 1 + 2 = 3. In algebra, we may substitute every quantity with a letter, akin to x + y = z. These letters may symbolize any quantity, so long as the outcomes are nonetheless true. So x + y = z may very well be 1 + 2 = 3. Nevertheless it may be 7 + 5 = 12. Or 1,000 + 2,431 = 3,431. So long as x + y = z, the letters may symbolize any numbers in any respect.

This seems like math class, doesn’t it? However algebra isn’t only for the classroom. Folks use it on daily basis. Algebra could be particularly useful in determining unknown quantities. If you wish to go to a buddy’s home and must know if it can take longer to stroll or to bike, you’ll must do algebra to seek out out. Evaluating costs whenever you store? You’ll use algebra. If you wish to put in a ground, sew a quilt, knit a shawl or paint a wall, you’ll use algebra to learn the way a lot materials you want. 

The phrase “algebra” comes from the Arabic phrase “al-jabr.” It may imply “discount” or “bringing collectively damaged issues.” A lot of what we learn about algebra comes from Greek and Persian mathematicians working greater than 1,200 years in the past.

In a sentence

Scientists are utilizing algebra to assist design tiny origami robots that may squeeze and bend into tiny areas.

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