Question

the expression 3x-y-[2x+3(2-y)] is equal to what?

Answer 1

3x-y-[2x+3(2-y)]
=3x-y-(2x+6-3y)
= 3x-y-2x-6+3y
=3x-2x+3y-y
= x+2y

Answer 2

but the choices are x-4y-6, x-6, x+2y-6,x-4y+6

Answer 3

o o i missed something the answer is
x+2y-6

Answer 4

how come?

Answer 5

3x-y-[2x+3(2-y)]
=3x-y-(2x+6-3y)
= 3x-y-2x-6+3y
= 3x-2x+3y-y-6
= x+2y-6

Answer 6

oh i get it! :) thanks :)

Answer 7

can you help me with other problems? hehe

Answer 8

yes

Answer 9

\[ x ^{3}-3x ^{2}+7 is subtracted from 5x ^{3}-4x ^{2}-7\] is equal to?

Answer 10

( x^3 -3x^2 +7 ) - ( 5x^3 -4x^2 - 7 )
= x^3 -3x^2 +7 - 5x^3 +4x^2 +7
= x^3-5x^3 -3x^2 -4x^2 +7+7
do the last step now

Answer 11

\[4^{3}-x^{2}-14 \] is this right?

Answer 12

* 4x^3