Question

product of 5x and (4xy – 4 ) is ------------

Answer 1

Answer:

$5x \times 4xy = 20 {x}^{2} y \\ 5x \times 4 = 20 \\ answer = 20x {}^{2} y - 20x$

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Answer 2

Given : The given multiplication work is, (5x) × (4xy - 4)

To find : The answer to the given multiplication.

Solution :

We can simply solve this mathematical problem by using the following mathematical process. (our goal is to calculate the answer to the given multiplication)

In this case, we will be using the general rules of algebraic multiplication.

So,

= (5x) × (4xy - 4)

= [(5x) × (4xy)] - [(5x) × 4]

= (5 × x × 4 × x × y) - (5 × x × 4)

= (5 × 4 × x × x × y) - (5 × 4 × x)

= (20 × x² × y) - (20 × x)

= 20x²y - 20x

(This will be considered as the final result of the given mathematical problem.)

Hence, the answer to the multiplication is, (20x²y - 20x)