Question

FACTORIZE 9(x+a)²-4x²​

Answer 1

Step-by-step explanation:

9(x+a)^2-4x^2=[3(x+a)]^2-(2x)^2

=(3x+3a+2x)(3x+3a-2x)

=(5x+3a)(x+3a)

Answer 2

Answer:

9(x²+2ax+a²)-4x²        (Expand by formula)

9x²+18ax+9a²-4x²      (Multiply by 9)

5x²+18ax+9a²             (Refactorize by trinomial method)

5x²+15ax+3ax+9a²     (Breaking the middle term)

5x(x+3a)+3a(x+3a)     (Taking out Common)

(x+3a)(5x+3a)             (Ans)