Solve 0 = 4x2+12x+9. Select the equation that shows the correct
substitution of a, b, and c in the quadratic formula.
121 122 - 4(4309)
2(4)
X=
-12 + 122 +4(4)(9)
2(4)
o
-121 122 – 4(4)(9)
2(4)

The correct  substitution of a, b, and c in the quadratic formula is given by

The solutions of the given quadratic equation are real and equal.

Step-by-step explanation:

The given quadratic equation is

The coefficients a, b and c are as follow:

The quadratic formula is given by

The correct  substitution of a, b, and c in the quadratic formula is given by

Bonus:

The solution of this quadratic equation is given by

Therefore, the solutions of the given quadratic equation are real and equal.

d. 8

step-by-step explanation:

the given radical expression is:

we can rewrite this as:

we express as square numbers to get;

the exponents will now cancel out to give.

the correct answer is d