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Add the following expressions: ab + bc + ca and – bc – ca – ab - Mathematics

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प्रश्न

Add the following expressions:

ab + bc + ca and – bc – ca – ab

योग

उत्तर

We have, ab + bc + ca + (– bc – ca – ab)

= ab + bc + ca – bc – ca – ab

On combining the like terms

= ab – ab + bc – bc + ca – ca

= 0 + 0 + 0

= 0

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अध्याय 10: Algebraic Expressions - Exercise [पृष्ठ ३२०]

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एनसीईआरटी एक्झांप्लर Mathematics [English] Class 7
अध्याय 10 Algebraic Expressions
Exercise | Q 57. (c) | पृष्ठ ३२०

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