Question

2x - 3y is a factor of:

• A. $$4x^2+9y^2-12xy$$
• B. $$4x^2+9y^2+12xy$$
• C. $$8x^3+27y^3$
• D. $$4x^2+36y^2+12xy$$

Answer 1

Answer:

$$4x^2+9y^2-12xy$$

Concept used :

(a - b)² = a² + b² - 2ab 

Calculations :

(2x - 3y)²  = 4x² + 9y² - 12xy 

we can see that option 1 has the same value 

∴ option A is the correct answer