Step-by-step explanation:
square root 15 = irrational
square root 16 = 4 = rational
square root 21 = irrational
square root 22 = irrational
3x^2 + 6x - 10 = 0
x = [-6 +/- sqrt(^2 - 3*3*-10)] / 2*3
= 1.08 and -3.08
Other x -intercept is (-3.08,0)
Answer:
a) -9, -5, 2, 3
b) 1.66, 0,33, -1.55, -3.25
c) -4.01, -3.35, 0.35, 0.81
Step-by-step explanation:
-infinity, positive infinity
