Question

Find the roots of the equation √x^2 + 15 = 8​

Answer 1

Given quadratic equation can be written as, 

x2−(2m)x+(8m−15)=0

Now for equal roots, Discriminant =0

⇒b2−4ac=0

⇒(−2m)2−4(8m−15)=0

⇒m2−8m+15=0

⇒(m−3)(m−5)=0, factor 

⇒m=3,5

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Answer 2

Answer:

x=-7

Step-by-step explanation:

x+15=8(square and root cancelled)

x=8-15

x=-7