Answer:
Quadratic formula for given equation is [tex]x=\frac{-(-1)\pm\sqrt{(-1)-4(7)(-9)}}{2\times7}[/tex]
Step-by-step explanation:
Given Quadratic Equation is 7x² = 9 + x
We need to find correct Quadratic formula for the given quadratic equation.
If the quadratic equation is in standard for,
ax² + bx + c = 0
then quadratic formula is given by,
[tex]x=\frac{-b\pm\sqrt{b-4ac}}{2a}[/tex]
First we rewrite the quadratic equation,
7x² - x - 9 = 0
by comparing with standard form of equation we get,
a = 7 , b = -1 and c = -9
oNw putting these value in quadratic formula we get,
[tex]x=\frac{-(-1)\pm\sqrt{(-1)-4(7)(-9)}}{2\times7}[/tex]
Therefore, Quadratic formula for given equation is [tex]x=\frac{-(-1)\pm\sqrt{(-1)-4(7)(-9)}}{2\times7}[/tex]
