2 years ago

-x²-8x-16=0 what is the solutions by solving by quadratic equations

Mathematics

1 answer:

Alika [10]2 years ago

6 0

Answer:

x = - 4

Step-by-step explanation:

Given

- x² - 8x - 16 = 0 ( multiply through by - 1 to clear the leading negative )

x² + 8x + 16 = 0 ← this is a perfect square

(x + 4)² = 0 ( take the square root of both sides )

x + 4 = 0 ( subtract 4 from both sides )

x = - 4

You might be interested in

Triangle ABC is such that AB = 3cm , BC = 4cm , angle ABC = 120 and BAC = theta : Write down in terms of theta , and expression

lakkis [162]

1)inside the triangule is 180º .There are 3 angules, one with 120º, theta and
angle ACB, lets call it x.

x + theta + 120 = 180
x + theta= 180-120
x + theta= 60
x= 60- theta
angle ACB= 60- theta

8 0

3 years ago

There are 5 buses, and each of these buses is taking 37 people to a game. Another bus is taking 9 people. How many people are th

Nina [5.8K]

Add 37 + 9 = 46

If thats not your answer theres more.

46 divided by 5 = 9.2

4 0

2 years ago

What is the value of x? (x + 40) (3x)" R 20 35 60 70

vfiekz [6]

Answer:70

Step-by-step explanation:

7 0

2 years ago

WE NEED ANSWERS RIGHT NOW

Kisachek [45]

it like trying to imagine re-folding back a cardboard box

6 0

2 years ago

List the following elements in proper set notation. Place the elements in numerical order within the set. 0, 1, 123, 4, 34

forsale [732]

Answer:

{0, 1, 4, 34, 123}

Step-by-step explanation:

{0, 1, 4, 34, 123}

8 0

2 years ago

-x²-8x-16=0 what is the solutions by solving by quadratic equations ​

-x²-8x-16=0 what is the solutions by solving by quadratic equations