Which equation cannot be solved by factoring? A. X^2+5x - 4 = 0
B. X^2+ 6x + 9 = 0
C. x^2+ 3x-4=0
D. x²-x-6=0

Type the correct answer in the box. consider the system of linear equations below. rewrite one of the two equations above in the form ax + by = c, where a, b, and c are constants, so that the sum of the new equation and the unchanged equation from the original system results in an equation in one variable.

Find the value of x in each case. give reasons to justify your solutions! d q ∈ pr

Solve 2 - 3 cos x = 5 + 3 cos x for 0° ≤ x ≤ 180° a. 150° b. 30° c. 60° d. 120°