Multiply $3 a - 4 b + 5 c b y - 3 a$ .

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Solution

Multiplication of algebraic expression
Multiplying each term of the polynomial by the monomial.
$\begin{array}{rcl} 3 a - 4 b + 5 c b y - 3 a & = & (3 a - 4 b + 5 c) \times (- 3 a) \\ = & - 9 a^{2} + 12 a b - 15 a c \end{array}$
Therefore, the product is $- 9 a^{2} + 12 a b - 15 a c$ .

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\frac{1}{3} A = \frac{1}{4} B = \frac{1}{5} C .

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Factorize:

${(3 a - 2 b)}^{3} + {(2 b - 5 c)}^{3} + {(5 c - 3 a)}^{3}$

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