Question

4. Find the product of the following.
i) –5a2bc, 6ab, 8abc2
ii) –3x2y and (5y – xy)
who will answer with explanation i will mark it as brainliest.

Answer 1

$\sf\large\underline{Given:}$

• -5a²bc, 6ab , 8abc²
• -3x²y , (5y-xy)

$\sf\large\underline{To\: Find:}$

• The product of following expression]

$\sf\large\underline{Solution:}$

• Before calculating noticing one thing during multiplying power adds but in Division power decrease]

Calculation for 1st expression:]

==>-5a²bc×6ab×8abc²

• Here we decorate or separate the term in same group]

==>-5×6×8×a²×a×a×b×b×b×c×c²

==>-240×a⁴×b³×c³

==>-240a⁴b³c³

Calculation for 2nd expression:]

==>-3x²y×(5y-xy)

• Here applying same above condition]

==>-3x²y×5y-3x²y×xy

==>-3×5×x²×y×y-(-3×x²×x×y×y)

==>-15×x²×y²+3×x³×y²

==>-15x²y²+3x³y³

• Here we take common

==>-3x²y²(5-xy)

Hence,

Answer for 1st expression:]

• -240a⁴b³c³

Answer for 2nd expression:]

• -3x²y²(5-xy) or -15x²y²+3x³y³

Answer 2

Answer

• -5a²bc×6ab×8abc²=--240a⁴b³c³
• -3x²y×(5y-xy)=-15x²y²+3x³y²