Question

-x² + 7x + 5 = 10 need help ASAP and ols explane if you can​

Answer 1

Answer:

x=-6.192

and

x=-0.807

Step-by-step explanation:

1) turn this into a quadratic equation by moving it to the "10" to the right:

-x^2+7x-5=0

now quadratic equations are in the form of:

ax^2+bx+c

so substitute a=1

b=7

and c=-5 in the quadratic formula: $\frac{-b+/-\sqrt{b^2-4ac} }{2a}$

so

$\frac{7+/-\sqrt{29} }{-2}$

lets do addition first:

so

(7+$\sqrt{29}$)/-2=-6.19258240357

lets do subtraction next:

(7-$\sqrt{29}$)/-2=-0.80741759643