Since the quadratic formula of ax^2+bx+c is
x=(-b+-(plus OR minus) sqrt (b^2-4ac))/2a, we can get that a is 1 (since 1*x^2 is x^2), b is 4, and c is -16, so x=(-4+-sqrt((-4)^2-4*1*(-16)))/2*1
= (-4+-sqrt(16-(-64)))/2=(-4+-sqrt(80))/2 which is either (-4+sqrt(80))/2 or
(-4-sqrt(80))/2. Since 80 is divisible by 4 (aka 2 squared), we can write sqrt(80) as 2*sqrt(20) as 4 goes into 80 20 times, getting (-4+2sqrt(20))/2 or
(4-2sqrt(20))/2, and crossing out the 2's we get (-2+sqrt(20)) or (-2-sqrt(20))
Answer:
I think the answer is -104,400,000,000,000,000
Step-by-step explanation:
The anwer is, DV
Hope this helps
Do you have to find the angle or the measurement?
Answer:
x-3
Step-by-step explanation:
(x+5)(x-1)(height)=x3+x2-17x+15
x2+5x-1x-5(h)=x2+4x-5
so what times x2+4x-5 will equal the volume
look at the constant -5 and think what will multiply with that to get 15 so -3 right so then check the rest of it by doing (x2+4x-5)(x-3) =x3−3x2+4x2−12x−5x+15
=x3+x2−17x+15 so the answer is x-3
Hope this helps! :)