Dhjdjdjdjdjdjdjduddj google it
Answer:
<h2>x =
-2+i√5 and -2i-√5</h2>
Step-by-step explanation:
The general form of a quadratic equation is ax²+bx+c = 0
Given the quadratic equation x²+4x+9=0 in its standard form, on comparing with the general equation we can get the value of the constant a, b and c as shown;
ax² = x²
a = 1
bx = 4x
b = 4
c = 9
The quadratic formula is given as x = -b±√(b²-4ac)/2a
Substituting the constant;
x = -4±√(4²-4(1)(9))/2(1)
x = -4 ±√(16-36)/2
x = -4±√-20/2
x = -4±(√-1*√20)/2
Note that √-1 = i
x = -4±(i√4*5)/2
x = (-4±i2√5)/2
x = -4/2±i2√5/2
x = -2±i√5
The solution to the quadratic equation are -2+i√5 and -2i-√5
I dont completely know but it might be 3
Answer:
Bird swoops down by 107 feet to grab a mouse on top of a 
foot tall rock
Step-by-step explanation:
Given
The level of mouse from the ground is foot as it is on the top of a foot tall rock.
The level of bird at which it is flying from the ground is 
feet
Change in elevation when the bird swoops down to grab the mouse
feet
Bird swoops down by 107 feet to grab a mouse on top of a foot tall rock
