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प्रश्न
Multiply: `-2/3"a"^7"b"^2` and `-9/4"a""b"^5`
उत्तर
`(-2/3"a"^7"b"^2)(-9/4"ab"^5)`
= `(-2/3xx(-9)/4)("a"^7xx"a")("b"^2xx"b"^5)`
= `3/2"a"^8"b"^7`
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