MATH 220 Midterm: MATH 220 KSU Test 1f02

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You may use a calculator, but do not use books or notes. The point value of each problem is given in the left-hand margin. (7 pts) 1. 2x2 + 3x + 1 x2 4x 5 (6 pts) 2. 3x2 + 5x x2 1 page 2 of 5 (8 points) 4. Find the vertex and all x- and y-intercepts of the parabola y = 3 2x x2 . (9 pts) 6. X x x2 + x 2 page 3 of 5 (9 pts) 7. Solve for x . x x 2 . 8 x x2 x 2 (8 pts. ) |x 2| x2 4 page 4 of 5 (8 points) 9. 2x 9 x2 9 (7 pts) 10. Explain why there must be at least 4 di erent solutions to the equation. 3x4 10x2 + x + 1 = 0 in the interval 2 x 2 . (7 pts) 11.

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