Question

What is the product? (4x)(-3x8) (-7x3)

Answer 1

Answer: $84x^{12}$

Step-by-step explanation:

The given expression  : $(4x)(-3x^8) (-7x^3)$

Open brackets, we get

$4x\cdot-3x^8\cdot-7x^3\\\\=4\cdot-3\cdot-7\cdot x\cdot x^8\cdot x^3$

Using law of exponents:-

$a^m\cdot a^n=a^{m+n]$

$84\cdot x^{1+8+3}\\\\=84x^{12}$

Hence, the product $(4x)(-3x^8) (-7x^3)=84x^{12}$

Answer 2

Use BIDMAS ( brackets indicates division, multiplication, addition, subtraction) to solve this 
4x( (-3)(8) ) ( (-7) (3) )
= 2016x