Question

resolve into factors:4a²-9c²​

Answer 1

Answer:

4a

2

−4ab+b

2

−9c

2

+12cd−4d

2

=(4a

2

−4ab+b

2

)−(9c

2

−12cd+4d

2

)=(2a−b)

2

−(3c−2d)

2

=(2a−b+3c−2d)(2a−b−3c+2d)

Answer 2

Answer:

(2a)²- (3c)1

4 a ²- 9 c 1

hence proved