Answer:
85
Step-by-step explanation:
<em>The equation for the discriminant is </em>
b^2-4(a)(c)
<em>Plug your numbers in from the equation. </em>
<em>1=a, -7=b, -9=c</em>
<em />
(-7)^2-4(1)(-9)
49-(-36)
49+36
85
Answer:
x=22/7
Step-by-step explanation:
You start out with x*7=22 so, to get your equation that solves for the unknown number, x, you need to divide 7 from both sides to get x=22/7.
Answer:
-4(2+i)
Step-by-step explanation:
-8-4i (can factor out a 4)
-4(2+i)