Please tell me how to solve Q 21 Share with your friends Share 0 Saksham Tolani answered this Dear Student, =4a2-9b2+4a+1={(2a)2+2×2a×1+(1)2}-{(3b)2}=(2a+1)2-(3b)2 -----(a-b)(a+b)=a2-b2=(2a+1+3b)(2a+1-3b) Regards! 0 View Full Answer
