X² + x - 20 = 0
x² = x * x
x = the sum of the factors of -20
-20 ⇒ 1 x 20
2 x 10
- 4 x 5 ⇒ only these factors can arrive to a sum of 1
(x - 4)(x + 5) = x(x+5) - 4(x+5) = x² + 5x - 4x - 20 = x² + x - 20
x - 4 = 0
x = 4
x + 5 = 0
x = -5
<em>Answer:</em>
<em>2.1</em>
<em>explanation: 772.malachi on insta</em>
It’s no graph to give answer to
3 1/2 x 1 1/2= 7/2 x 4/2= 28/4. 28/4 x 2/3= 56/12. 56 divided by 12 is 4 8/12. The second song is 7 minutes is long and the third song is 4 8/12 minutes long.
