Answer:
1. 3x² = 27
x² = 27 ÷ 3
x² = 27/3
x = √27/3 or x = -√27/3
x = 3 or x = -3
2. x² - 144 = 0
(x + 12)(x - 12) = 0
x + 12 = 0 or x - 12 = 0
x = -12 or x = 12
3. x² - 20 = 25
x² - 20 - 25 = 0
x² - 45 = 0
(x + 3√5 )(x - 3√5) = 0
x + 3√5 = 0 or x - 3√5 = 0
x = -3√5 or x = 3√5
4. 4x² - 16 = 32
x² - 4 = 8
x = 8 + 4
x² = 12
x = √12 or x = -√12
x = 2√3 or x = -2√3
5. (2x - 1)² = 36
2x - 1 = √36 or 2x - 1 = -√36
x = 3.5 or x = -2.5
Step by step explanation:
Hope it's help:)
Ty....
