Multiply using the FOIL method.(-3x2 - 4)(-5x2 - 10)
A. -8x4 + 50x2 + 50
B. -8x4 + 50x2 + 40
C. 15x4 + 50x2 + 50
D. 15x4 + 50x2 + 40
Answer: D
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Use factoring techniques to solve the quadratic equation.x2 - 12x + 35 = 0
A. {7, 5} B. {-7, 5} C. {-7, -5} D. {35, 0}
Factor completely, or state that the polynomial is prime.x2y - 4y + 20 - 5x2
A. (y - 5)(x + 2)(x - 2) B. (y + 5)(x + 2)(x - 2) C. (y - 5)(x2 + 4) D. prime
Find the coordinates of the vertex for the parabola defined by the given quadratic function.f(x) = 4x2 - 8x + 7
A. (-2, 39) B. (1, 3) C. (2, 15) D. (-1, 19)
Solve the problem.The weight of a body above the surface of the earth varies inversely as the square of its distance from the center of the earth. What is the effect on the weight when the distance is multiplied by 2?
A. The weight is divided by 2. B. The weight is multiplied by 2. C. The weight is multiplied by 4. D. The weight is divided by 4.