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This worksheet provides ten practice problems for solving quadratic equations using the square root property method.

Square Root Property math worksheet featuring ten quadratic equations for students to solve.

Square Root Property math worksheet featuring ten quadratic equations for students to solve.

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Show Answer Key & Explanations Step-by-step solution for: Solving Quadratic Equations by Taking Square Roots Worksheets

Problem: Solve each quadratic equation using the Square Root Property.



The square root property states that if \( x^2 = k \), then:
\[
x = \pm \sqrt{k}
\]
This means we take both the positive and negative square roots of \( k \).

Let's solve each equation step by step.

---

#### 1) \( n^2 - 12 = 0 \)

1. Add 12 to both sides:
\[
n^2 = 12
\]

2. Apply the square root property:
\[
n = \pm \sqrt{12}
\]

3. Simplify \( \sqrt{12} \):
\[
\sqrt{12} = \sqrt{4 \cdot 3} = 2\sqrt{3}
\]

4. Solution:
\[
n = \pm 2\sqrt{3}
\]

---

#### 2) \( p^2 = -36 \)

1. Notice that \( p^2 = -36 \). Since the square of any real number is non-negative, there are no real solutions for this equation.

2. Solution:
\[
\text{No real solutions}
\]

---

#### 3) \( (k - 6)^2 = 49 \)

1. Apply the square root property:
\[
k - 6 = \pm \sqrt{49}
\]

2. Simplify \( \sqrt{49} \):
\[
\sqrt{49} = 7
\]

3. So:
\[
k - 6 = 7 \quad \text{or} \quad k - 6 = -7
\]

4. Solve for \( k \):
\[
k = 7 + 6 = 13 \quad \text{or} \quad k = -7 + 6 = -1
\]

5. Solution:
\[
k = 13 \quad \text{or} \quad k = -1
\]

---

#### 4) \( r^2 - 32 = 0 \)

1. Add 32 to both sides:
\[
r^2 = 32
\]

2. Apply the square root property:
\[
r = \pm \sqrt{32}
\]

3. Simplify \( \sqrt{32} \):
\[
\sqrt{32} = \sqrt{16 \cdot 2} = 4\sqrt{2}
\]

4. Solution:
\[
r = \pm 4\sqrt{2}
\]

---

#### 5) \( u^2 = 64 \)

1. Apply the square root property:
\[
u = \pm \sqrt{64}
\]

2. Simplify \( \sqrt{64} \):
\[
\sqrt{64} = 8
\]

3. Solution:
\[
u = \pm 8
\]

---

#### 6) \( (h + 1)^2 = 16 \)

1. Apply the square root property:
\[
h + 1 = \pm \sqrt{16}
\]

2. Simplify \( \sqrt{16} \):
\[
\sqrt{16} = 4
\]

3. So:
\[
h + 1 = 4 \quad \text{or} \quad h + 1 = -4
\]

4. Solve for \( h \):
\[
h = 4 - 1 = 3 \quad \text{or} \quad h = -4 - 1 = -5
\]

5. Solution:
\[
h = 3 \quad \text{or} \quad h = -5
\]

---

#### 7) \( (y + 2)^2 = -9 \)

1. Notice that \( (y + 2)^2 = -9 \). Since the square of any real number is non-negative, there are no real solutions for this equation.

2. Solution:
\[
\text{No real solutions}
\]

---

#### 8) \( m^2 + 63 = 0 \)

1. Subtract 63 from both sides:
\[
m^2 = -63
\]

2. Notice that \( m^2 = -63 \). Since the square of any real number is non-negative, there are no real solutions for this equation.

3. Solution:
\[
\text{No real solutions}
\]

---

#### 9) \( w^2 - 72 = 0 \)

1. Add 72 to both sides:
\[
w^2 = 72
\]

2. Apply the square root property:
\[
w = \pm \sqrt{72}
\]

3. Simplify \( \sqrt{72} \):
\[
\sqrt{72} = \sqrt{36 \cdot 2} = 6\sqrt{2}
\]

4. Solution:
\[
w = \pm 6\sqrt{2}
\]

---

#### 10) \( a^2 - 25 = 0 \)

1. Add 25 to both sides:
\[
a^2 = 25
\]

2. Apply the square root property:
\[
a = \pm \sqrt{25}
\]

3. Simplify \( \sqrt{25} \):
\[
\sqrt{25} = 5
\]

4. Solution:
\[
a = \pm 5
\]

---

Final Answers:


\[
\boxed{
\begin{aligned}
1) & \quad n = \pm 2\sqrt{3} \\
2) & \quad \text{No real solutions} \\
3) & \quad k = 13 \text{ or } k = -1 \\
4) & \quad r = \pm 4\sqrt{2} \\
5) & \quad u = \pm 8 \\
6) & \quad h = 3 \text{ or } h = -5 \\
7) & \quad \text{No real solutions} \\
8) & \quad \text{No real solutions} \\
9) & \quad w = \pm 6\sqrt{2} \\
10) & \quad a = \pm 5
\end{aligned}
}
\]
Parent Tip: Review the logic above to help your child master the concept of solving quadratic equations practice worksheet.
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