Question

Rhett is solving the quadratic equation 0= x2 – 2x – 3 using the quadratic formula. Show the correct substitution of the values a, b, and c into the quadratic formula?

Answer 1

A. Is The Answer

Explanation:

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Answer 2

Formula for solving (finding x intercepts) quadratic equation is:


`x = (-b +- √(b^2 - 4ac) )/(2a)`

Quadriatic equation we can write as:
ax^2 + bx + c = 0
comparing this with given equation we can see that:
a = 1
b = -2
c = -3
if we express this in formula for solving equation we get


`x = (-(-2) +- √((-2)^2 - 4*1*(-3)) )/(2*1)`