Question

FACTORISE THE FOLLOWING
(A) 9X²—12XY+4Y²​

Answer 1

Answer: Please note 2 is the square. For Example: 9x2 means 9x square and x means alphabet x. X means multiplication sign.

Step-by-step: a) 9x2-12xy+4y2

9x2-6X2xy+4y2

3(3x2-2)+2y(x+2y)

b) 81a2+72ab+16b2

81a2+9X8ab+16b2

9(9a2+1)+8b(a+2b)