which statements are true when solving x^2=81

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nardotowavyyt nardotowavyyt

23-10-2020
Mathematics

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which statements are true when solving x^2=81

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Dirtyfacebabyaj Dirtyfacebabyaj · Answer 1 · 2020-10-23T21:29:24+02:00

Dirtyfacebabyaj Dirtyfacebabyaj

23-10-2020

Answer: x

2

=

81

can be written as

x

2

−

81

=

0

by property ,

a

2

−

b

2

=

(

a

+

b

)

(

a

−

b

)

The expression becomes

x

2

−

(

9

)

2

=

0

(

x

−

9

)

(

x

+

9

)

=

0

equating each of the terms with zero we obtain the solution

x

−

9

=

0

and

x

+

9

=

0

the solutions are

x

=

9

or

x

=

−

9

Step-by-step explanation:

Answer Link

homadison4 homadison4 · Answer 2 · 2021-04-03T18:40:04+02:00

homadison4 homadison4

03-04-2021

Answer:

A) Take the square root of both sides to solve

E) x = ±9

Step-by-step explanation:

Answer Link