What does it mean when there is no coefficient of the variable

[15 points]find the least common multiple of the expressions: 1. 3x^2, 6x - 18 2. 5x, 5x(x +2) 3. x^2 - 9, x + 3 4. x^2 - 3x - 10, x + 2 explain if possible

Which of the following values are in the range of the function graphed below? check all that apply ! - will give the answer "brainliest! "

Solve each quadratic equation by factoring and using the zero product property. 14x - 49 = x^2