CristianPaz
06.05.2020 •
Mathematics
Simply 6(x+y) + (x-y)
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Ответ:
Work: we distribute 6 to x and y and then add x and minus y
6•x
6•y
6x + x +6y - y
Combine like terms:
=7x + 5y
Ответ:
a b c are coefficients you look at the number that s in front of the x
a=2
b=-4
c=-6
Δ=b²-4ac= 16-4*2*(-6)=64 then x1,x2=-b+-√Δ/2a=4+-8/2*2=
x1=3
x2=-1 for those numbers the function is 0