Simplify 6z^-7 (2) x² (4) ^4x^-4

Step-by-step explanation:

First, subtract  

7

from each side of the equation to put the equation in standard form:

x

2

+

4

x

+

4

−

7

=

7

−

7

x

2

+

4

x

−

3

=

0

We can now use the quadratic formula to find the solutions for  

x

. The quadratic formula states:

For  

a

x

2

+

b

x

+

c

=

0

, the values of  

x

which are the solutions to the equation are given by:

x

=

−

b

±

√

b

2

−

(

4

a

c

)

2

⋅

a

Substituting:

1

for  

a

4

for  

b

−

3

for  

c

gives:

x

=

−

4

±

√

4

2

−

(

4

⋅

1

⋅

−

3

)

2

⋅

1

x

=

−

4

±

√

16

−

(

−

12

)

2

x

=

−

4

±

√

16

+

12

2

x

=

−

4

±

√

28

2

x

=

−

4

±

√

4

⋅

7

2

x

=

−

4

±

√

4

√

7

2

x

=

−

4

±

2

√

7

2

x

=

−

4

2

±

2

√

7

2

x

=

−

2

±

√

7

Or

x

=

−

2

+

√

7

and  

x

=

−

2

−

√

7

a. 74 degrees

step-by-step explanation:

because the lines through the side and the box in the corners shows that these are congruent triangles and since they are mirrored the 37 degrees is also mirrored so the answer is 37 * 2 which is 74.