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andreyandreev [35.5K]
3 years ago
11

If x*x-2x-35=0 then x=?

Mathematics
2 answers:
alexandr1967 [171]3 years ago
8 0

Answer:

x=7   x=-5

Step-by-step explanation:

x^2 -2x-35 = 0

Factor

What two numbers multiply to -35 and add to -2

-7*5 = -35

-7+5 = -2

(x-7) (x+5) =0

Using the zero product property

x-7 =0    x+5 =0

x=7   x=-5

Ludmilka [50]3 years ago
5 0

Answer:

x = 7 or

x = -5

Step-by-step explanation:

x² - 2x - 35 = 0

x² - 7x + 5x - 35 = 0

x(x - 7) + 5(x - 7) = 0

(x - 7) (x + 5) = 0

x - 7 = 0 or x + 5 = 0

x = 7 or x = -5

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4 years ago
(Subtract<br> ) f(x) = x + 1<br> g(x) = x2 + 1
kramer

Answer:

The first question:

x = -1

Step-by-step explanation:

Step  1  :

Pulling out like terms :

1.1     Pull out like factors :

  -x - 1  =   -1 • (x + 1)

Equation at the end of step  1  :

Step  2  :

Solving a Single Variable Equation :

2.1      Solve  :    -x-1 = 0

Add  1  to both sides of the equation :

                     -x = 1

Multiply both sides of the equation by (-1) :  x = -1

One solution was found :

                  x = -1

Processing ends successfully

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7 0
3 years ago
Please help me solve
Lana71 [14]

Answer:

C. 30 ft

Step-by-step explanation:

Pythagorean Theorem: a² + b² = c²

When we draw out a picture, we should see that we use the Pythagorean Theorem to help solve our missing height:

10² + b² = 32²

b² = 32² - 10²

b = √924

b = 2√231 or 30.3974

Round that to 30 feet.

6 0
3 years ago
Read 2 more answers
4 What is the solution to the inequality -3x-42&gt;3 ?
Vladimir [108]

\huge \boxed{\mathbb{QUESTION} \downarrow}

  • What is the solution to the inequality -3x-42>3 ?

\large \boxed{\mathfrak{Answer \: with \: Explanation} \downarrow}

- 3 x - 42 \gt 3

Add 42 to both sides.

-3x>3+42

Add 3 and 42 to get 45.

-3x>45

Divide both sides by -3. As -3 is <0, the inequality direction has changed.

x

Divide 45 by -3 to get -15.

\huge \boxed{ \boxed{ \bf \: x

8 0
3 years ago
What calculation is modeled on the number line?
vova2212 [387]

Answer:

top right

Step-by-step explanation:count how mnay it goes back each time

8 0
3 years ago
Read 2 more answers
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