Δ = b^2 - 4.a.c = 4 - 4.6.3 = -68< 0
rootΔ = root(-68)
no real solutions :) Cause -68 not positive.
Good Luck :)
Answer:
<h2>87</h2>
Step-by-step explanation:

13. Picture is cut off. Insufficient information is shown.
14. ST = 2×(XY)
8z +3 = 2(3z +2)
2z = 1
z = 1/2
Answer:
Step-by-step explanation:
2/5
We will use the formula for the slope:
m = ( y2- y1 ) / ( x2 - x1 )
For PQ : m = ( 0 - 0 ) / ( a + c - 0 ) = 0
For RS : m = ( b - b ) / ( a - ( 2a + c )) = 0
Both slopes are m = 0, so PQ and RS are parallel to x - axis and at the same time parallel to each other ( PQ | | RS ). One pair of opposite sides is parallel.