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Sergio [31]
3 years ago
6

If using the method of completing the square to solve the quadratic equation x^2-15x-10=0, which number would have to be added t

o complete the square
Mathematics
1 answer:
igomit [66]3 years ago
4 0

Answer:

<h3>             \bold{\dfrac{225}4}</h3>

Step-by-step explanation:

x^2-15x-10=0\\\\x^2-2\cdot x\cdot\frac{15}2+(\frac{15}2)^2-(\frac{15}2)^2-10=0\\\\(x-\frac{15}2)^2-\frac{225}4-10=0

So to complete the square we need to add (and subtract) the number  \frac{225}4

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