(2x^2 - 3x^3) - (9x^2 - 6x^3)

Question

need answer for difference of problem above

Answer 1

1. Open the parentheses by multiplying (9x2 - 6x3) by -1

 

2x2 - 3x3 -9x2 + 6x3

 

2. solve

-7x2+3x3

 

Answer 2

2x² - 3x³ 

9x2 - 6x³

 

Subtract bottom expression from top.

 

2x² - 9x² - 3x³ - ( -6x³ )    I use parentheses is remind myself that I am subtracting a negative 6x³.

 

-7x² - 3x³ + 6x³

-7x² + 3x³

Answer 3

2x^2-9x^2  -3x^3+6x^3

2x^2 - 9x^2 =-7x^2       -3x^3+6x^3 = +3x^3

 

-7x^2+3x^3 or in Basic or C++   = -7x**2+3x**3