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zzz [600]
2 years ago
15

X^2 - 4 Find the roots

Mathematics
1 answer:
charle [14.2K]2 years ago
8 0
Write the polynomial as an equation.
y=x^2-4

To find the roots of the equation, replace y with 0 and solve.
0=x^2-4

Replace y with 0 and solve for x
X^2-4=0

Add 4 to both sides of the equation
X^2=4

Take the square root of both sides of the equation to eliminate the exponent on the left side.
X= ±√4

The complete solution is the result of both the positive and negative portions of the solution.
X=2,-2

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3 years ago
A bag contains a number of marbles of which 35 are blue, 10 are red and the rest are
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Y = 45*p(y) / (1 - p(y))    if I knew what p(y) is, we can find how many yellow marbles there are.   p(y) = probability of choosing yellow.

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