Question

2x2 - 5x – 10 = 0 solve using the quadratic formula.

Answer 1

the formula is \[-b \pm \sqrt{b ^{2}-4ac}/2a\]

Answer 2

ur a here is 2; b=-5 and c=10 plug in and solve

Answer 3

c=-10*

Answer 4

2x^2-5x-10=0
Quadratic Formula
\[x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}\]
a=2 b=-5 c=-10
\[x=\frac{5\pm\sqrt{25+80}}{4}=\frac{5\pm\sqrt{105}}{4}\]

Answer 5

\[2x^2 - 5x - 10 =0 \]
We know the quadratic formula is of the form...
\[x = \frac{-b \pm \sqrt{(b^2-4ac)}}{2a} \]
Let's try to determine what these variables correspond to in our given equation.
\[ a = 2\\b = -5\\c = -10 \]
So, now we can plug and solve.
\[x = \frac{5 \pm \sqrt{(25+80)}}{4} \]