It may help you to read Introduction to Algebra first "Like terms" are terms whose variables (and their exponents such as the 2 in x2) are the same. In other words, terms that are "like" each other. Note: the coefficients (the numbers you multiply by, such as "5" in 5x) can be different. Are all like terms because the variables are all x
(1/3)xy2
−2xy2
6xy2
xy2/2
Are all like terms because the variables are all xy2
Unlike Terms
If they are not like terms, they are called "Unlike Terms":
−3xy | −3y | 12y2 | ← these are all unlike terms (xy, y and y2 are all different) |
Combining Like Terms
You can add like terms together to make one term:
They are both like terms, so you can just add them:
7x + x = 8x
It is simpler to write x, and is so common that "1x" looks strange.
Some of the terms are like terms.
Combine like terms:
(4x3) + (3x2 − x2) + (2 − 7)
Then add like terms:
4x3 + 2x2 − 5
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Text Solution
`"Lymphocyte - erythrocyte"``"Plasma - serum"``"Mitral valve - bicuspid valve"``"Atrioventricular node - pacemaker"`
Answer : C
Solution : The opening between the left atrium and left ventricle is guarded by a bisuspid valve, also known as mitral valve.