alishamooney4 alishamooney4

12-04-2018
Mathematics

contestada

The product of a+3 and -2a^2+15a+6 is -2a^3+xa^2+51a+18. What is the value of x? Is it 8 ,9,12 or15?

Respuesta :

Ashraf82 Ashraf82

21-03-2019

Answer:

x = 9 ⇒ second answer

Step-by-step explanation:

∵ (a + 3)(-2a² + 15a + 6) =

-2a³ + 15a² + 6a - 6a² + 45a + 18 =

-2a³ + 9a² + 51a + 18

∵ (a + 3)(-2a² + 15a + 6) = -2a³ + xa² + 51a + 18

∴ -2a³ + 9a² + 51a + 18 = -2a³ + xa² + 51a + 18

∴ x = 9

Answer Link

Otras preguntas

Tim had 6 feet of wrapping paper for Kylie's birthday present. He used 3 3/8 feet of wrapping paper to wrap her gift. How much wrapping paper Would Tim he left

Why is salt used for DNA isolation?

Find the circular permutation for 5 things taken 5 at a time.

What is the difference between a scarcity and a shortage? a. A scarcity occurs when producers will not or cannot offer goods or services at the current prices,

What happened in 1984,

Why did the us want to be an empire? 3 reasons

Using the group of cards just described in this lesson, the probability of drawing a red five is

If the shape of an object is irregular like a stone how can you measure its volume

In the Civil Rights Act of 1964, Congress prohibited discrimination in restaurants and hotels on the basis of race, color, religion, or national origin. What e

If each lap around the track is 400 meters and she runs 4 kilometers each day. How many laps around the track does she run in 3 days