What value will make the equation true? Show your work or explain how you found your solution. - 2.1 - x = -1.5.

Factor the polynomial 4x4 – 20x2 – 3x2 + 15 by grouping. what is the resulting expression? (4x2 + 3)(x2 – 5) (4x2 – 3)(x2 – 5) (4x2 – 5)(x2 + 3) (4x2 + 5)(x2 – 3)

Which coefficient matrix represents a system of linear equations that has a unique solution ? options in photo*

How are algebraic expressions evaluated using substitution?