Question

What is the product? –9x(5 – 2x)

Answer 1

use the distributeive propepry
a(b+c)=ab+ac
remember that negative times negtive=positive and posititve tiem snegative is negative so

-9x(5-2x)=
-9x(5)+-9x(-2x)=
-45x+(+18x^2)=
-45x+18x^2
answer is 18x^2-45x

Answer 2

The product of –9x(5 – 2x), given the data from the question is 18x² – 45x

Data obtained from the question

• –9x(5 – 2x)
• Product =?

How to determine the product

To obtain the product of two numbers say a and b, we simply do the following

a × b = ab

Thus, the product of a and b is ab

With the above logic, we can obtain the product of –9x(5 – 2x) as illustrated below:

–9x(5 – 2x)

Clear the bracket by using –9x to multiply through

–45x + 18x²

Rearrange

18x² – 45x

Thus, the product of –9x(5 – 2x) is 18x² – 45x

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