Potrzebuję na jutro !
to tak:
1.Usuń nawiasy i zredukuj wyrazy podobne.
a) -2(3a+5b)+3(4b-6a)
b)-7(x-3y+-2)-3(y+x+z)-18y
c) 2(+0,25b)-4(1,25a-)-a+b
d)(2,1x²-y²+y²+5x²+6(y²-x²)
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
a) -6a-10b+12b-18a=2b-24a
b) -7x+21y-z+14-3y-3x-3z-18y=-10x-4z+14
c) a+0,5b-5a-3b-a+b=-5a-1,5b
d) -0,7x²+1,4y²+y²+5x²+4y²-8x²=-3,7x²+6,4y²
a) -2(3a+5b)+3(4b-6a) = -6a-10b+12b-18a=2b-24a
b)-7(x-3y+-2)-3(y+x+z)-18y = -7x+21y-z+14-3y-3x-3z=-10x+18y-4z+14
c) c) 2(+0,25b)-4(1,25a-)-a+b = a+0,5b-5a+3b-a+b=-5a+1,5b
d)(2,1x²-y²+y²+5x²)+6(y²-x²) = -0,7x^2+\frac{7}{5}y^2-\frac{1}{3}y^2-\frac{5}{3}x^2+4y^2-\frac{4}{3}x^2= -3\frac{7}{10}x^2+5\frac{1}{15}y^2
x^2 lub y^2 oznacza x lub y do 2 potegi