Solve for x: (x – 4)2 = 2

A. x = 4 ± 2

B. x = 4 ±

C. x = 4 ±

D. x = 4 ± 2

Question

Solve for x: (x – 4)2 = 2

A.  x = 4 ± 2

B.  x = 4 ± 

C.  x = 4 ± 

D.  x = 4 ± 2

sw050399 · Answer

Is that 2 times x - 4?

anonymous · Answer

No its $$(x - 4)^2 = 2$$

sw050399 · Answer

For choices B and C, it's 4 plus or minus....?

anonymous · Answer

A. $$x = 4 ± 2\sqrt2 $$
B. $$x = 4 ± \sqrt13$$
C. $$x = 4 ± \sqrt2$$
D. $$ x = 4 ± 2\sqrt13$$

Sorry about the confusion

sw050399 · Answer

Well, to get rid of the squared, you have to take the square root on both sides.

anonymous · Answer

making the x's  x^2 and taking the radical sign out from each equation, right?

anonymous · Answer

Well, square rooting the left side would remove the exponent of 2 from the (x-4) and squaring rooting the right side would make the 2 into $$\sqrt{2}$$

anonymous · Answer

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