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Fundamental Concepts (Including Fundamental Operations) — MATHS STD 7 — Question

ICSE BoardEnglish MediumSTD 7MATHSFundamental Concepts (Including Fundamental Operations)3 Marks
Question
Multiply: $6xy^2 - 7x^2y^2 + 10x^3$​​​​​​​ and $- 3x^2y^3​​​​​​​$​​​​​​​
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Answer

Product of $6xy^2 - 7x^2y^2 + 10x^3$​​​​​​​ and $- 3x^2y^3$
$= - 3x^2y^3 (6xy^2 - 7x^2y^2 + 10x^3)$
$= - 3x^2y^3 \times 6xy^2 + (- 3x^2y^3) \times (- 7x^2y^2 ) + (- 3x^2y^3) \times 10x^3$
$= - 18x^3y^5 + 21x^4y^5 - 30x^5y^3​​​​​​​$​​​​​​​

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