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Semmy [17]
4 years ago
9

(×-5) second power equals 3​

Mathematics
1 answer:
Snezhnost [94]4 years ago
6 0

Answer: x_1=6.73\\\\x_2=3.26

Step-by-step explanation:  

Given the following expression:

(x-5)^2=3

And knowing that:

(a\±b)^2=a^2-2ab+b^2

We get:

x^2-2(x)(5)+5^2=3\\\\x^2-10x+25=3

Move the 3 to the left side of the equation:

x^2-10x+25-3=0\\\\x^2-10x+22=0

Apply the Quadratic formula:

x=\frac{-b\±\sqrt{b^2-4ac} }{2a}

In this case:

a=1\\b=-10\\c=22

Substituting values into the Quadratic formula, we get:

x=\frac{-(-10)\±\sqrt{(-10)^2-4(1)(22)} }{2(1)}\\\\\\x_1=6.73\\\\x_2=3.26

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