Rewrite the equation by completing the square. f (x) = x^2 + 20x - 86

Mathematics

1 answer:

9966 [12]3 years ago

7 0

Answer:

f(x) = (x+10)^2 - 86

Step-by-step explanation:

f(x) = x^2 + 20x - 86
f(x) = x^2 + 20x + 100 - 86 (because (20/2)^2 = 100)
f(x) = (x+10)^2 - 86

Completing the square means you do (b/2)^2 where b is: a^2x + bx + c.

You might be interested in

A ladder is leaning against a vertical wall which is 5m high. The top of the ladder slides all the way down the wall so that the

Lynna [10]

Answer:

Do using Pythagoras theorem... Also before doing a question of height and distance always try to make the figure

Step-by-step explanation:

Use the two triangles ABC and ABD to first get the base and find the height of the ladder

7 0

3 years ago

Jorges printer can print out 48 pages in 0.5 hour. How many pages can he print in one hour?

Norma-Jean [14]

You would need to do 48×2=96 pages an hour .it would be 96 pages an hour because for half an hour it is 48 pages so you need to do times two to make it one full hour.i hope this helps if you dont get how I explain it please tell me or if you already have an answer

8 0

3 years ago

Read 2 more answers

A rectangle is inside a circle with a 5 cm radius.

o-na [289]

Answer:

Do it your self

Step-by-step explanation:

Gross

8 0

3 years ago

A rectangle has a width of 3 units and a length of 4 units. Nancy needs to increase both the length and the width of the rectang