" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
= (3x²-x²)+(-7x+3x)+(1-4)
=2x²-4x-3
= 3x²-7x+1-x²-3x+4
= 3x²-x²-7x-3x+1+4
= 2x²-10x+5
semoga benar :D