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Solve the equation 2(x-4)² = 100 for x.

a) x = 6
b) x = -6
c) x = 14
d) x = -14

User Kief
by
8.3k points

1 Answer

1 vote

Final answer:

After taking the square root of both sides of the equation and adding 4 to isolate x, the solution is determined to be approximately 11.07 or -3.07. However, these answers don't match the provided options.

Step-by-step explanation:

To solve the equation 2(x-4)² = 100 for x, first, divide both sides of the equation by 2 to isolate the squared term:

(x-4)² = 50

Now take the square root of both sides, keeping in mind there will be two solutions since a square root can be positive or negative:

x-4 = ±50

Adding 4 to both sides gives us the two possible solutions for x:

x = 4 + √50 or x = 4 - √50

√50 is approximately 7.07, so:

x ≈ 4 + 7.07 or x ≈ 4 - 7.07

Thus, the solutions are:

x ≈ 11.07 or x ≈ -3.07

However, none of the solutions given in the question (a, b, c, d) match these results. It is possible that there may have been a typo in the provided options, and it should be checked for accuracy.

User Dmytro Batyuk
by
8.3k points

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