Question

b) -4 is the solution of the equation
(i) - 4(2 + x) = 8
(ii) - 4(x - 2) = 8
(iii) 4(x - 2) = 8
(iv) - 4 + 4x = 0​

Answer 1

Solution:-

Case :1

x=-4

-4(2+x) = 8

-4(2-4)=8

-4(-2)=8

8=8

-4 is a solution of these equations.

Case :2

x=-4

-4(x-2) =8

-4(-4-2)=8

-4(-6)=8

24≠8

-4 is not a solution of these equations

Case :3

x=-4

4(x-2) =8

4(-4-2) =8

4(-6) =8

-24 ≠ 8

-4 is not a solution of these equations

Case :4

x=-4

-4+4x =0

-4+4(-4) =0

-4-16=0

-20≠0

-4 is not a solution of these equations

•°• option (i) is a solution of -4....