Approximate to the nearest tenth. explain how you got your answer.

3.8=4.0 is the right answer.  First you had to refine to the decimal form, and it gave us, 3.8=4.0. You had to round to the nearest tenth is 4.0 is the right answer.   Hope this helps! And thank you for posting your question at here on , and have a great day. -Charlie

- 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

a

step-by-step explanation: