Question

Which is the solution set to: (a + 9)2 = 0?

0 1-9,9}
O {3}
O 1-3, 3)
O {-9}
O None of the above
O (-3)
O {9}
A

Answer 1

• 
  `a = \{ - 9\}`

Explanation:

To find:-

• The solution set of the equation.

Answer:-

The given equation to us is,

`\implies (a+9)^2=0 \\`

Put square root on both the sides,

`\implies √((a+9)^2)=√(0) \\`

Simplify,

`\implies a + 9 = 0 \\`

Subtract 9 on both the sides,

`\implies a = 0-9 \\`

Simplify,

`\implies \boxed{ a = -9} \\`

Hence the value of a is -9.

Answer 2

• D) {-9}

------------------------

Solve the given equation:

• (a + 9)² = 0

Square root both sides:

• a + 9 = 0
• a = - 9

Correct choice is D.