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प्रश्न
Add:
3a(a – b + c), 2b(a – b + c)
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उत्तर
We have,
3a(a – b + c) + 2b(a – b + c)
= (3a2 – 3ab + 3ac) + (2ab – 2b2 + 2bc)
= 3a2 – 3ab + 2ab + 3ac + 2bc – 2b2 ...[Grouping like terms]
= 3a2 – ab + 3ac + 2bc – 2b2
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संबंधित प्रश्न
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−3y2 + 10y − 16; 7y2 + 8
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(6a − 5b − 8c) + (15b + 2a − 5c)
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Add the following expressions:
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At age of 2 years, a cat or a dog is considered 24 “human” years old. Each year, after age 2 is equivalent to 4 “human” years. Fill in the expression [24 + 
(a – 2)] so that it represents the age of a cat or dog in human years. Also, you need to determine for what ‘a’ stands for. Copy the chart and use your expression to complete it.
| Age | [24 +  (a – 2)] |
Age (Human Years) |
| 2 | ||
| 3 | ||
| 4 | ||
| 5 | ||
| 6 |
