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Leviafan [203]
3 years ago
13

What is the first step in solving for zin equation 5z - 4 = 26

Mathematics
1 answer:
aksik [14]3 years ago
7 0

Answer:

add 4 on both sides

Step-by-step explanation:

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Solve this equation by completing the square: x2 + 4x – 13 = –8
marishachu [46]

Answer:

x = 1 or x = -5

Step-by-step explanation:

We are given;

  • The quadratic equation, x² + 4x - 13 = -8

We are required to solve the equation using the completing square method.

To do this, we use the following steps;

Step 1: We make sure the coefficient of x² is one

x² + 4x - 13 = -8

Step 2: Combine the like terms (take the constant term to the other side)

x² + 4x - 13 = -8

x² + 4x = -8 + 13

we get

x² + 4x  = 5

Step 3: We add the square of half the coefficient of x on both sides of the equation

Coefficient of x = 4

Half of coefficient of x = 2

Square of half the coefficient of x = 2² (4)

We get;

x² + 4x + (2²)  = 5 + (2²)

Step 4: Put x and 2 under one square and the solve the other side of the equation.

We get

(x + 2)² = 5 + 4

(x + 2)² = 9

Step 5: Get the square root on both sides of the equation;

(x + 2)² = 9

√(x + 2)² = ±√9

(x + 2)= ±3

Therefore;

x+2 = + 3 or x + 2 = -3

Thus, x = 1 or -5

The solution of the equation is x = 1 or x = -5

6 0
3 years ago
Landon has 9 comic books and 33 chapter books.How many books does Landon have?
Dvinal [7]

Answer:

He has 42 books in total.

Step-by-step explanation:

You add 9 + 33 to get 42. 3 plus 9 is 12, so the 1 is carried over to the other 3. Add those together to get a sum of 42.

4 0
3 years ago
I need help helphelphelp helphelphelp helphelphelp​
Brut [27]

Answer:

234 in^2

Step-by-step explanation:

*look at the pick* 6+60+168=234

7 0
3 years ago
Find the difference (x^2+3y-3)-(-2x^2+3y-1)
Sedbober [7]
The answer is 3x^2 - 2.

x^2+3y-3+2x^2-3y+1

Add the like terms together, you get 3x^2 - 2

8 0
3 years ago
Read 2 more answers
Find the solution of 4 times the square root of the quantity of x plus 2 equals negative 16, and determine if it is an extraneou
Sonbull [250]
Your wording amounts to the equation
4*sqrt(x)+2=-16
4*sqrt(x)=-18
sqrt(x)=-9
but square roots are nonnegative so no solution exists.

5 0
3 years ago
Read 2 more answers
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