Which expression simplifies to 56? A. 7 + 3 x 6-4
B. 70 - 5 = 3 + 8
C. 42 = (6 x 8)
D. 60 - (12 = 4 + 1)

none

Step-by-step explanation:

None of the expressions should have an equal sign.

A. 7 + 3 x 6 - 4  = 7 + 18 - 4 = 25 - 4 = 21

B. 70 - 5 = 3 + 8

If = should be -

70 - 5 - 3 + 8  = 65 - 3 + 8 = 62 + 8 = 70

If = should be +

70 - 5 + 3 + 8 = 65 + 3 + 8 = 76

C. 42 = (6 x 8)

If = should be -

42 - (6 x 8)  = 42 - 48 = -6

If = should be +

42 + (6 x 8)  = 42 + 48 = 90

D. 60 - (12 = 4 + 1)

If = should be -

D. 60 - (12 - 4 + 1) = 60 - (8 + 1) = 60 - 8 = 51

If = should be +

D. 60 - (12 + 4 + 1) = 60 - (16 + 1) = 60 - 17 = 53

None of the expressions equal 56 even when substituting plus or minus for the equal signs.

none of the above.

for one of the equations to be used in the process, there has to be a term in the equation since squared is .

since there is only a term in the first equation, we cannot derive a from completing the square.

solving with completing the square