(25 points)
2 answers:
X³ - 3x² - 4x + 12=(x³ - 3x²) - (4x - 12)=x²(x-3)-4(x-3)= (x-3)(x²-4)=(x-3)(x-2)(x+2)
equation cross x-axis in point x=-2, x=2, x=3
so we can choise from 1 and 3 answers:
<span>It starts down on the left and goes up on the right and intersects the x-axis at x = -2, 2, and 3.
It starts up on the left and goes down on the right and intersects the axis at x = -2, 2, and 3.</span>
coefficient before x³>0 so it go up
so it ís answer 1
Answer:
1. <span>It starts down on the left and goes up on the right and intersects the x-axis at x = -2, 2, and 3</span>
equation cross x-axis in point x=-2, x=2, x=3
so we can choise from 1 and 3 answers:
<span>It starts down on the left and goes up on the right and intersects the x-axis at x = -2, 2, and 3.
It starts up on the left and goes down on the right and intersects the axis at x = -2, 2, and 3.</span>
coefficient before x³>0 so it go up
so it ís answer 1
Answer:
1. <span>It starts down on the left and goes up on the right and intersects the x-axis at x = -2, 2, and 3</span>
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