Oblicz :
a) 3x(x-7)
b) a2*(a+2b-1)
c) -3xy*(x+y-3)
d)5xkwadrat*(x3+3x-1)
Z obliczeniami !
a) 3x(x-7) = 3x*x+3x*(-7) = - 21x
b)a^2*a+a^2*2b+a^2*(-1)= a^3+2a^2b-a2
c)-3x^2y-3xy^2+9xy
d) + +5x= +-=
Te a^2 to oznacza a do potęgi 2. :D
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a) 3x(x-7) = 3x*x+3x*(-7) = - 21x
b)a^2*a+a^2*2b+a^2*(-1)= a^3+2a^2b-a2
c)-3x^2y-3xy^2+9xy
d) + +5x= +-=
Te a^2 to oznacza a do potęgi 2. :D