1) Decided whether x=2 is the solution of
2x+4=0 or not
Answers
Answer:
not
Step-by-step explanation:
If x =2
2X =4
hence,
4+4 =8
hence it proves that 2X + 4 =8
Answer:
no( -2=x. )
explanation:
if x =2 as given
then, 2×2+4=0
4+4 =0
8=0
if we take -2 as x
then,2×-2+4=0
-4+4=0.
OR
as per to exams the correct following is {to be understandable I said that now this is how u should write.}[even u can write like how I written before it's Ur wish.]
You want to separate x from everything else like so:
2x-4=00
2x=4 When moving -4 to the other side you use its inverse operation so when it gets to the other side its positive
x=2 2 and x are linked together by multiplication. Dividing 2x by 2 = 1x x times 1 is x. So usually you wont see a one by a variable. (X is a variable, I remember that because the number could vary and be anything till I solve the problem) then you divide the other side by 2 because you cant just pull that extra two fram anywhere, its moving to the other side! 4/2=2 so x=2
To check it, simply put 2 in parentheses where x is
2(2)-4=00
4–4=00
00=00
my answer is correct because the equation is balanced.
x=2.