so the number of positive real roots is either 4, or (4-2) 2, or (2-2) 0. And the negative real roots are only 1. Any slack gets picked up by the versatile complex twins.
4 real positive ones and 1 negative real one
or
2 real positive ones and 1 negative real one and 2 complex ones
or
0 real positive ones and 1 negative real one and 4 complex ones.
<span>
Solution for 3x-5=20 equation:
3x - 5 = 20
3x = 20 + 5
3x = 25 (divide both sides by 3 to get x)
3x/3 = 25/3
x = 8.33333333333
</span>
<span> </span>
2/5 is the aneswer. beacuse 7/8/9/10 eqaul 4 times out of 10 to win 4/10 reduces down to 2/5.
4(x^2 - 1)(x - 3)(x + 3)^2 = 0
(x + 1)(x - 1)(x - 3)(x + 3) = 0
x = -1, 1, 3, -3
Answer:
Step-by-step explanation:
Let the width be X ft
Length = 2x - 40
Total area = 33,600 sq.ft
length * width = 33,600
(2x - 40) * x = 33,600
2x² - 40x -33600 = 0