Find approximate solutions of the equation.
-$\mathrm{x}^{2}+3.1 \mathrm{x}-8.4=0$
A) 1.74 or -1.74
B) 4.84 or -1.74
C) 1.74 or -4.84
D) 4.84 or -4.84

Name: Find approximate solutions of the equation. -$\mathrm{x}^{2}+3.1 \mathrm{x}-8.4=0$ A) 1.74 or -1.74 B) 4.84 or -1.74 C) 1.74 or -4.84 D) 4.84 or -4.84
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Question

Quizplus · Accepted Answer

The quadratic formula gives the roots as $(-b \pm \sqrt{b^2 - 4ac}) / 2a$. For $x^2 + 3.1x - 8.4 = 0$, $a=1$, $b=3.1$, $c=-8.4$. Solving gives approximate roots 1.74 and -4.84.

Find Approximate Solutions of the Equation x2+3.1x−8.4=0\mathrm{x}^{2}+3.1 \mathrm{x}-8.4=0x2+3.1x−8.4=0 A) 174 or -1

Find Approximate Solutions of the Equation $\mathrm{x}^{2}+3.1 \mathrm{x}-8.4=0$ A) 174 or -1