Rizwanramsha97idn
Answered

For all your questions, big or small, IDNLearn.com has the answers you need. Ask anything and receive thorough, reliable answers from our community of experienced professionals.

z= -1/2 simplify z²+4z+5​

Sagot :

Marceluyaiobongidn

(0 - 1 ) - 4z) - 5 = 0

2²

STEP

2

:

Simplify 1

2²

Equation at the end of step

2

:

((0 - 1 ) - 4z) - 5 = 0

4

STEP

3

:

Rewriting the whole as an Equivalent Fraction

3.1 Subtracting a whole from a fraction

Rewrite the whole as a fraction using 4 as the denominator :

4z = 4z = 4z×4

1 4

-1 - (4z × 4) = -16z - 1

—————————————

4 4

Equation at the end of step

3

:

(-16z-1) - 5 = 0

4

STEP

4

:

Rewriting the whole as an Equivalent Fraction :

4.1 Subtracting a whole from a fraction

Rewrite the whole as a fraction using 4 as the denominator :

5 = 5 = 5×4

1 4

STEP

5

:

Pulling out like terms :

5.1 Pull out like factors :

-16z - 1 = -1 ×(16z + 1)

Adding fractions that have a common denominator :

5.2 Adding up the two equivalent fractions

(-16z-1) - (5 × 4) -16z - 21

——————————————————

4

STEP

6

:

Pulling out like terms :

6.1 Pull out like factors :

-16z - 21 = -1 × (16z + 21)

Equation at the end of step

6

:

-16z - 21

————————— = 0

4

STEP

7

:

Here's how:

-

-16z-21 × 4 = 0 × 4

4

Now, on the left hand side, the 4 cancels out the denominator, while, on the right hand side, zero times anything is still zero.

The equation now takes the shape :

-16z-21 = 0

Solving a Single Variable Equation:

7.2 Solve : -16z-21 = 0

Add 21 to both sides of the equation :

-16z = 21

Multiply both sides of the equation by (-1) : 16z = -21

Divide both sides of the equation by 16:

z = -21/16 = -1.312

One solution was found :

z = -21/16 = -1.312

We appreciate your contributions to this forum. Don't forget to check back for the latest answers. Keep asking, answering, and sharing useful information. Your questions deserve precise answers. Thank you for visiting IDNLearn.com, and see you again soon for more helpful information.