= ( 5x + 3a ) ( 5x – 3a) + ( 2x – 5a ) ( 2x – 5a) = 25×2-9a2+4×2-10ax-10ax+25a2 = 29×2+16a2-20ax Reply
= ( 5x + 3a ) ( 5x – 3a) + ( 2x – 5a ) ( 2x – 5a)
= 25×2-9a2+4×2-10ax-10ax+25a2
= 29×2+16a2-20ax