Solve the quadratic equation. (2x - 1)(x + 1) = 3
A. 
B. 
C. 
D. 
Answer: B
Mathematics
You might also like to view...
Factor by grouping.15x2 - 6x + 20x - 8
A. (15x - 4)(x + 2) B. (3x - 4)(5x + 2) C. (15x + 4)(x - 2) D. (3x + 4)(5x - 2)
Mathematics
Solve the system of equations using Gaussian elimination or Gauss-Jordan elimination.8w + 8x - 5y - 4z = 207w + 6x - 8y - 4z = -18w - 8x + 6y + 5z = -34-5w - 4x + 8y + 8z = 1
A. (1, 5, 4, 2) B. (-1, 4, -5, 2) C. (-1, 5, 4, -2) D. No solution
Mathematics
Write the word phrase in symbols, using x as the variable.The sum of a number and 62
A. 62 - x B. x + 62 C. 62x D. 62
Mathematics
Use a product-to-sum identity to rewrite the expression.cos 
sin 
A. 0.5
B. 0.5
C. 0.5
D. 0.5
Mathematics