In this equation, identify the following: -3x + 7

-3 = Constant, co-efficient, variable

x = Constant, co-efficient, variable

+ 7 = Constant, co-efficient, variable

Step-by-step explanation:

In this EXPRESSION , and not equation!!!

- 3 is a coefficient

x is a variable

7 is a constant

- 2 + 10x³ - 21x² + 19x - 4

step-by-step explanation:

each term in the second factor is multiplied by each term in the first factor

x²(- 2x² + 4x - 1) - 3x(- 2x² + 4x - 1) + 4(- 2x² + 4x - 1) ← distribute

= - 2 + 4x³ - x² + 6x³ - 12x² + 3x -8x² + 16x - 4

collect like terms

= - 2 + 10x³ - 21x² + 19x - 4 ← in standard form

4th option is correct xy=-10

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