2x - 3y is a factor of:

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

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

C$$8x^3+27y^3$

D $4x^2+36y^2+12xy$

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

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