3 years ago

Solve the quadratic equation by completing the square . x ^ 2 + 4x - 3 = 0

Mathematics

1 answer:

viva [34]3 years ago

7 0

Answer:

Step-by-step explanation:

x²+4x=3

add 4 both sides

x²+4x+4=7

(x+2)²=7

x=-2±√7

You might be interested in

3 (a - 1) + 31 - 11a = 4 ( 2a + 3)

nikitadnepr [17]

Answer:

-⅖

Step-by-step explanation:

We need to simplify the given equation and find out the value of a , as ,

=> 3(a-1)+31-11a = 4(2a+3)

=> 3a -3+31-11a = 8a + 12

=> -8a -28 = 8a + 12

=> 16a = -28-12

=> 16a = -40

=> a = -2/5

<h3>• Hence the value of a is -⅖ .</h3>

8 0

3 years ago

Read 2 more answers

A playhouse is in the shape of a regular octagonal pyramid with a side length of 3 feet and a slant height of 12 feet. The wood

g100num [7]

I believe it is 144 dollars

3 0

4 years ago

Read 2 more answers

Parallel lines x and w are cut by transversals z and y and form 4 angles at each intersection. Where line x intersects with line

ale4655 [162]

Answer:

$m\angle 1 =105^\circ\\m\angle 2 =75^\circ$

Step-by-step explanation:

The diagram is drawn and attached below.

From the diagram

$m\angle 2 =75^\circ $ (Alternate Angles)$

$m\angle 1+ m\angle 2 =180^\circ $ (Sum of angles on a straight line)\\m\angle 1+75^\circ =180^\circ\\m\angle 1 =180^\circ-75^\circ\\m\angle 1 =105^\circ$

7 0

3 years ago

12x+y when x=3 and y=52

telo118 [61]

Substitute

12(3) + (52)

12(3) = 36

36 + 52 = 88

4 0

3 years ago

How long will it take a seal swimming at a speed of 8 mph to travel 52 miles?

Anna [14]

Answer:

6.5 hours

Step-by-step explanation:

52 divided by 6 = 6.5

6 0

3 years ago