Answer:
1. x² = 36
√x² = √36
x = ±6
x = 6 or x = -6
2. x² - 25 = 0
x² = 25
√x² = √25
x = ±5
x = 5 or x = -5
3. x² - 25 = 11
x² = 11 + 25
x² = 36
4. (x + 1)(x - 2) = 0
x + 1 = 0 | x - 2 = 0
x = -1 | x = 2
5. (5x + 1)(14x + 7) = 0
5x + 1 = 0 | 14x + 7 = 0
5x = -1 | 14x = -7
5x/5 = -1/5 | 14x/14 = -7/14
x = -1/5 | x = -1/2
Step-by-step explanation:
hope it helps.
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Answers & Comments
Answer:
1. x² = 36
√x² = √36
x = ±6
x = 6 or x = -6
2. x² - 25 = 0
x² = 25
√x² = √25
x = ±5
x = 5 or x = -5
3. x² - 25 = 11
x² = 11 + 25
x² = 36
√x² = √36
x = ±6
x = 6 or x = -6
4. (x + 1)(x - 2) = 0
x + 1 = 0 | x - 2 = 0
x = -1 | x = 2
5. (5x + 1)(14x + 7) = 0
5x + 1 = 0 | 14x + 7 = 0
5x = -1 | 14x = -7
5x/5 = -1/5 | 14x/14 = -7/14
x = -1/5 | x = -1/2
Step-by-step explanation:
hope it helps.