3 years ago

7b^2 - 14b - 56 = 0 Solve by completing the square

Mathematics

1 answer:

Yakvenalex [24]3 years ago

5 0

Answer: 7(b-1)^2-63

Step-by-step explanation:

Factor out 7

7(b^2-2b-8)

Add and subtract (-1)^2:

7(b^2-2b-8+(-1)^2-(-1\)^2)

Complete the square:

7((b-1)^2-8-(-1)^2)

Simplify:

7(b-1)^2-63

You might be interested in

Someone help I've re-taken this test like 3 times now!!!

Masja [62]

Answer:

the center is around 5

Step-by-step explanation:

that's just a guess, it seems to be the one that makes the most sense to me

6 0

4 years ago

What would be equation would be perpendicular to p(1,3), y = 2x - 1?

Nutka1998 [239]

Thats the answer p=0
y=2.×-1

7 0

3 years ago

Five less than the quotient of a number and negative four is greater than negative two

Phoenix [80]

x÷(-4)-5 > -2

(parenthesis are optional)

3 0

3 years ago

A university is composed of five schools. The enrollment in each school is given:

Lostsunrise [7]

Answer:

34.767 enrollments/computer

Step-by-step explanation:

According to the Hamilton's method, the standard divisor, D, is determined by dividing the number of enrollments in all schools by the number of new computers available:

$D=\frac{1050+1410+1850+2540+3580}{300}\\D=34.767\ enrollments/computer$

The standard divisor for this situation should be 34.767 enrollments/computer.

8 0

3 years ago

Kelly is making a quilt out or "3 square yards of white fabric and 's square yards of yellow fabric. What is the unit rate of ye

anastassius [24]

Answer:

Step-by-step explanation:

I think it is c

5 0

3 years ago