All categories

3 years ago

Which expression shows the correct multiplication of the following polynomilas? 3x(6x^2-3x+7)

Mathematics

1 answer:

snow_tiger [21]3 years ago

8 0

Answer: 18x^3-9x^2+21x

Solution:

3x(6x^2-3x+7)=

Applying the distributive property in the multiplication to eliminate the parentheses:

(3x)(6x^2)+(3x)(-3x)+(3x)(7)=

(3*6)x^(1+2)+3*(-3)x^(1+1)+(3*7)x=

18x^3-9x^2+21x

You might be interested in

Can you help me with these questions???

lord [1]

3. 28 Quarters and 5 dimes.

3 0

3 years ago

Wat r partial products of 452×12

Dennis_Churaev [7]

400×10=4000
400×2=800
50×10=500
50×2=100
2×10=20
2×2=4

4000+800+500+100+20+4=5,424
Check answer by multiplying 452 and 12
452×12=5,424

5 0

3 years ago

1.Solve for x (3.8,4.8,5.8,6.8)

vodomira [7]

6.8 is what i got for the answer

7 0

2 years ago

Please gyus help me out ..... urgent need......for 20 points please gyus answer it .....

Lunna [17]

Answer:

I wish I could help you but i have not learn yhat yet. so sorrry :( pleaser forgive jme....... please i beg u plase

Step-by-step explanation:

8 0

3 years ago

Which of the following is a solution of x2 − 10x = −36? (6 points)

Softa [21]

Answer:

Step-by-step explanation:

Given

x² - 10x = - 36

Solve using the method of completing the square

add ( half the coefficient of the x- term )² to both sides

x² + 2(- 5)x + 25 = - 36 + 25

(x - 5)² = - 11 ( take the square root of both sides )

x - 5 = ± $\sqrt{-11}$ ( add 5 to both sides )

x = 5 ± i $\sqrt{11}$

Thus

x = 5 - i $\sqrt11}$ or x = 5 + i $\sqrt{11}$

6 0

3 years ago