SOLUTION: Solve {{{7x^2-9=16}}} using the quadratic formula, writing the answer as a simplified radical expression.

SOLUTION: Solve {{{7x^2-9=16}}} using the quadratic formula, writing the answer as a simplified radical expression.

Algebra.Com

Question 48976: Solve using the quadratic formula, writing the answer as a simplified radical expression.
Answer by tutorcecilia(2152) (Show Source): You can put this solution on YOUR website!
[Set the equation equal to zero by subtracting 16 from both sides]
.

.
[Add the term (0x) to make it easier to work with]
.

a=7
b=0
c=-25
[Plug-in the values]

.
[Simplify]
.

.

.
x = +26.4575/14 = 1.8898
x = -26.4747/14 = -1.8898

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