Answer:
1. 1/2 +/-√5
2. 1 +/- i √6/2.
Step-by-step explanation:
1. f(x) = 4x^2 - 8x - 1
x = [-(-8) +/-√((-8)^2 - 4*4*-1)] / (2*4)
x =[ 8 +/- √80] / 8
= 1 +/- 4√5/8
= 1 +/- √5/2
= 1/2 +/-√5
2. By a similar method the zeros of the the second equation are:
x = [-(-4) +/- √((-4)^2 - 4*2*5)] / 4
= 4 +/- √(16 - 40) / 4
= 1 +/- √(-24)/4
= 1 +/- i √6 * 2 / 4
= 1 +/- i √6/2.
Answer:
ITS C: 2/3 in.
Step-by-step explanation:
edg 21 ^u^
2/3(4)= 8/3
(2/3)(4/1)
(2)(4)/(3)(1)
=8/3
hope this helps!
Answer
The last one
y+2=-(x+8)
3+7=10
10/12
simplified (divide by 2) it’s
5/6
the answer is A
