" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
B. 9x² + 2 + 1/9x²
C. 25m⁴ + 40m²n² + 16n⁴
D. 36e⁴ - 84e²f² +49f²